diff --git a/RELEASES.md b/RELEASES.md
index 2d37ec0c91..b1352d6fa8 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,4 +1,25 @@
-# Unreleased
+# Version 3.0-rc9
+
+This is the 9th release candidate for ink! 3.0.
+
+## Breaking Changes
+### We removed all data structures other than `Mapping` from the public ink! API
+
+This is a drastic breaking change; it was no easy decision for us.
+It affects `Lazy` and `Memory` as well. The rationale behind this change,
+as well as some notes on migrating existing contracts, are explained
+in [#1111](https://github.com/paritytech/ink/pull/1111) and
+[#1137](https://github.com/paritytech/ink/pull/1137).
+
+If you used `Memory` in your contract, you can achieve the same functionality
+by passing this data via arguments. If you think there's a case to be
+made for bringing it back, please get in contact with us.
+
+If you use [`ink_storage::Mapping`](https://paritytech.github.io/ink/ink_storage/struct.Mapping.html)
+in your contract, you need to initialize the data structure using the helper function
+[`ink_lang::utils::initialize_contract(…)`](https://paritytech.github.io/ink/ink_lang/utils/fn.initialize_contract.html).
+For more code examples you can take a look at our examples, e.g.
+[`erc20`](https://github.com/paritytech/ink/blob/master/examples/erc20/lib.rs).
 
 ### Please upgrade `scale-info` and `parity-scale-codec` in your contract's dependencies
 
@@ -11,6 +32,23 @@ scale-info = { version = "2", default-features = false, features = ["derive"], o
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive", "full"] }
 ```
 
+## Added
+- Export `ink_lang::utils::initialize_contract(…)` - [#1077](https://github.com/paritytech/ink/pull/1077).
+- Add `get_owner()` function to `dns` example contract - [#1118](https://github.com/paritytech/ink/pull/1118) (thanks [@agryaznov](https://github.com/agryaznov)).
+- Improved usage documentation of `ink_storage::Mapping` - [#1138](https://github.com/paritytech/ink/pull/1138).
+
+## Changed
+- Updated to `parity-scale-codec = "3"` and `scale-info = "2"` - [#1132](https://github.com/paritytech/ink/pull/1132).
+
+## Removed
+- Remove `collection` and `lazy` modules from public ink! API - [#1111](https://github.com/paritytech/ink/pull/1111).
+- Remove `Memory` from public ink! API - [#1137](https://github.com/paritytech/ink/pull/1137).
+
+## Fixed
+- Fix bug with referencing two external trait definitions - [#1141](https://github.com/paritytech/ink/pull/1141).
+- Explicitly specify trait in dispatching - [#1131](https://github.com/paritytech/ink/pull/1131) (thanks [@xgreenx](https://github.com/xgreenx)).
+- Make `rust-analyzer` expand ink! macros without warning - [#1107](https://github.com/paritytech/ink/pull/1107).
+
 # Version 3.0-rc8
 
 This is the 8th release candidate for ink! 3.0.
@@ -57,7 +95,7 @@ The ink! PR which implemented this is [#1065](https://github.com/paritytech/ink/
 metadata to V3 is [#1100](https://github.com/paritytech/ink/pull/1100), and for the `polkadot-js/api` it was [polkadot-js/api#4432](https://github.com/polkadot-js/api/pull/4432).
 
 ## Changed
-- Update metadate to support payable constructors - [#1100](https://github.com/paritytech/ink/pull/1100).
+- Update metadata to support payable constructors - [#1100](https://github.com/paritytech/ink/pull/1100).
 - Make constructors non-payable by default, require specifying `payable` explicitly - [#1065](https://github.com/paritytech/ink/pull/1065).
 - Renamed the error code `EcdsaRecoverFailed` to `EcdsaRecoveryFailed` ‒ [#1064](https://github.com/paritytech/ink/pull/1064).
 - Renamed the `ink_env` function `transferred_balance()` to `transferred_value()` ‒ [#1063](https://github.com/paritytech/ink/pull/1063).
diff --git a/crates/allocator/Cargo.toml b/crates/allocator/Cargo.toml
index 3805fb45aa..a074573a26 100644
--- a/crates/allocator/Cargo.toml
+++ b/crates/allocator/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_allocator"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
diff --git a/crates/engine/Cargo.toml b/crates/engine/Cargo.toml
index 089f7198c4..f38d7e9fd3 100644
--- a/crates/engine/Cargo.toml
+++ b/crates/engine/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_engine"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Michael Müller <michi@parity.io>"]
 edition = "2021"
 
diff --git a/crates/env/Cargo.toml b/crates/env/Cargo.toml
index 282ec29713..214df4c35b 100644
--- a/crates/env/Cargo.toml
+++ b/crates/env/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_env"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
@@ -15,10 +15,10 @@ categories = ["no-std", "embedded"]
 include = ["Cargo.toml", "src/**/*.rs", "README.md", "LICENSE"]
 
 [dependencies]
-ink_metadata = { version = "3.0.0-rc8", path = "../metadata/", default-features = false, features = ["derive"], optional = true }
-ink_allocator = { version = "3.0.0-rc8", path = "../allocator/", default-features = false }
-ink_primitives = { version = "3.0.0-rc8", path = "../primitives/", default-features = false }
-ink_prelude = { version = "3.0.0-rc8", path = "../prelude/", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../metadata/", default-features = false, features = ["derive"], optional = true }
+ink_allocator = { version = "3.0.0-rc9", path = "../allocator/", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../primitives/", default-features = false }
+ink_prelude = { version = "3.0.0-rc9", path = "../prelude/", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive", "full"] }
 derive_more = { version = "0.99", default-features = false, features = ["from", "display"] }
@@ -32,7 +32,7 @@ static_assertions = "1.1"
 rlibc = "1"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-ink_engine = { version = "3.0.0-rc8", path = "../engine/", optional = true }
+ink_engine = { version = "3.0.0-rc9", path = "../engine/", optional = true }
 
 # Hashes for the off-chain environment.
 sha2 = { version = "0.10", optional = true }
diff --git a/crates/eth_compatibility/Cargo.toml b/crates/eth_compatibility/Cargo.toml
index fab55128af..a172395651 100644
--- a/crates/eth_compatibility/Cargo.toml
+++ b/crates/eth_compatibility/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_eth_compatibility"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
@@ -15,7 +15,7 @@ categories = ["no-std", "embedded"]
 include = ["Cargo.toml", "src/**/*.rs", "/README.md", "/LICENSE"]
 
 [dependencies]
-ink_env = { version = "3.0.0-rc8", path = "../env", default-features = false }
+ink_env = { version = "3.0.0-rc9", path = "../env", default-features = false }
 
 [target.'cfg(not(target_os = "windows"))'.dependencies]
 # We do not include `libsecp256k1` on Windows, since it's incompatible.
diff --git a/crates/lang/Cargo.toml b/crates/lang/Cargo.toml
index bd732048f2..73f7061334 100644
--- a/crates/lang/Cargo.toml
+++ b/crates/lang/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_lang"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
@@ -15,20 +15,20 @@ categories = ["no-std", "embedded"]
 include = ["Cargo.toml", "src/**/*.rs", "README.md", "LICENSE"]
 
 [dependencies]
-ink_env = { version = "3.0.0-rc8", path = "../env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../storage", default-features = false }
-ink_primitives = { version = "3.0.0-rc8", path = "../primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../metadata", default-features = false, optional = true }
-ink_prelude = { version = "3.0.0-rc8", path = "../prelude", default-features = false }
-ink_eth_compatibility = { version = "3.0.0-rc8", path = "../eth_compatibility", default-features = false }
-ink_lang_macro = { version = "3.0.0-rc8", path = "macro", default-features = false }
+ink_env = { version = "3.0.0-rc9", path = "../env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../storage", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../metadata", default-features = false, optional = true }
+ink_prelude = { version = "3.0.0-rc9", path = "../prelude", default-features = false }
+ink_eth_compatibility = { version = "3.0.0-rc9", path = "../eth_compatibility", default-features = false }
+ink_lang_macro = { version = "3.0.0-rc9", path = "macro", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive", "full"] }
 derive_more = { version = "0.99", default-features = false, features = ["from"] }
 
 [dev-dependencies]
-ink_lang_ir = { version = "3.0.0-rc8", path = "ir" }
-ink_metadata = { version = "3.0.0-rc8", default-features = false, path = "../metadata" }
+ink_lang_ir = { version = "3.0.0-rc9", path = "ir" }
+ink_metadata = { version = "3.0.0-rc9", default-features = false, path = "../metadata" }
 
 trybuild = { version = "1.0.52", features = ["diff"] }
 # Required for the doctest of `env_access::EnvAccess::instantiate_contract`
diff --git a/crates/lang/codegen/Cargo.toml b/crates/lang/codegen/Cargo.toml
index c0435a18c8..6896659501 100644
--- a/crates/lang/codegen/Cargo.toml
+++ b/crates/lang/codegen/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_lang_codegen"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
@@ -18,7 +18,7 @@ include = ["Cargo.toml", "src/**/*.rs", "README.md", "LICENSE"]
 name = "ink_lang_codegen"
 
 [dependencies]
-ir = { version = "3.0.0-rc8", package = "ink_lang_ir", path = "../ir", default-features = false }
+ir = { version = "3.0.0-rc9", package = "ink_lang_ir", path = "../ir", default-features = false }
 quote = "1"
 syn = { version = "1.0", features = ["parsing", "full", "extra-traits"] }
 proc-macro2 = "1.0"
diff --git a/crates/lang/ir/Cargo.toml b/crates/lang/ir/Cargo.toml
index 9e6a30f83d..a399f0c7ce 100644
--- a/crates/lang/ir/Cargo.toml
+++ b/crates/lang/ir/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_lang_ir"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
diff --git a/crates/lang/macro/Cargo.toml b/crates/lang/macro/Cargo.toml
index 9b1e05271f..83926a6b88 100644
--- a/crates/lang/macro/Cargo.toml
+++ b/crates/lang/macro/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_lang_macro"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
@@ -15,19 +15,19 @@ categories = ["no-std", "embedded"]
 include = ["Cargo.toml", "src/**/*.rs", "README.md", "LICENSE"]
 
 [dependencies]
-ink_lang_ir = { version = "3.0.0-rc8", path = "../ir", default-features = false }
-ink_lang_codegen = { version = "3.0.0-rc8", path = "../codegen", default-features = false }
-ink_primitives = { version = "3.0.0-rc8", path = "../../primitives/", default-features = false }
+ink_lang_ir = { version = "3.0.0-rc9", path = "../ir", default-features = false }
+ink_lang_codegen = { version = "3.0.0-rc9", path = "../codegen", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../primitives/", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 syn = "1"
 proc-macro2 = "1"
 
 [dev-dependencies]
-ink_metadata = { version = "3.0.0-rc8", path = "../../metadata/" }
-ink_env = { version = "3.0.0-rc8", path = "../../env/" }
-ink_storage = { version = "3.0.0-rc8", path = "../../storage/" }
-ink_lang = { version = "3.0.0-rc8", path = ".." }
+ink_metadata = { version = "3.0.0-rc9", path = "../../metadata/" }
+ink_env = { version = "3.0.0-rc9", path = "../../env/" }
+ink_storage = { version = "3.0.0-rc9", path = "../../storage/" }
+ink_lang = { version = "3.0.0-rc9", path = ".." }
 scale-info = { version = "2", default-features = false, features = ["derive"] }
 
 [lib]
diff --git a/crates/metadata/Cargo.toml b/crates/metadata/Cargo.toml
index 365a17c5c1..c00b4b4acf 100644
--- a/crates/metadata/Cargo.toml
+++ b/crates/metadata/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_metadata"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
@@ -15,8 +15,8 @@ categories = ["no-std", "embedded"]
 include = ["Cargo.toml", "src/**/*.rs", "README.md", "LICENSE"]
 
 [dependencies]
-ink_prelude = { version = "3.0.0-rc8", path = "../prelude/", default-features = false }
-ink_primitives = { version = "3.0.0-rc8", path = "../primitives/", default-features = false }
+ink_prelude = { version = "3.0.0-rc9", path = "../prelude/", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../primitives/", default-features = false }
 
 serde = { version = "1.0", default-features = false, features = ["derive", "alloc"] }
 impl-serde = "0.3.1"
diff --git a/crates/prelude/Cargo.toml b/crates/prelude/Cargo.toml
index 3de500a0df..bcda9c3a57 100644
--- a/crates/prelude/Cargo.toml
+++ b/crates/prelude/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_prelude"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
diff --git a/crates/primitives/Cargo.toml b/crates/primitives/Cargo.toml
index b80efa1f1e..8d3fc10c6e 100644
--- a/crates/primitives/Cargo.toml
+++ b/crates/primitives/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_primitives"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
@@ -15,7 +15,7 @@ categories = ["no-std", "embedded"]
 include = ["/Cargo.toml", "src/**/*.rs", "/README.md", "/LICENSE"]
 
 [dependencies]
-ink_prelude = { version = "3.0.0-rc8", path = "../prelude/", default-features = false }
+ink_prelude = { version = "3.0.0-rc9", path = "../prelude/", default-features = false }
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive", "full"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
 cfg-if = "1"
diff --git a/crates/storage/Cargo.toml b/crates/storage/Cargo.toml
index 57f7262151..102206f4d0 100644
--- a/crates/storage/Cargo.toml
+++ b/crates/storage/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_storage"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
@@ -15,11 +15,11 @@ categories = ["no-std", "embedded"]
 include = ["Cargo.toml", "src/**/*.rs", "README.md", "LICENSE"]
 
 [dependencies]
-ink_env = { version = "3.0.0-rc8", path = "../env/", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../metadata/", default-features = false, features = ["derive"], optional = true }
-ink_primitives = { version = "3.0.0-rc8", path = "../primitives/", default-features = false }
-ink_storage_derive = { version = "3.0.0-rc8", path = "derive", default-features = false }
-ink_prelude = { version = "3.0.0-rc8", path = "../prelude/", default-features = false }
+ink_env = { version = "3.0.0-rc9", path = "../env/", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../metadata/", default-features = false, features = ["derive"], optional = true }
+ink_primitives = { version = "3.0.0-rc9", path = "../primitives/", default-features = false }
+ink_storage_derive = { version = "3.0.0-rc9", path = "derive", default-features = false }
+ink_prelude = { version = "3.0.0-rc9", path = "../prelude/", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive", "full"] }
 derive_more = { version = "0.99", default-features = false, features = ["from", "display"] }
@@ -33,7 +33,7 @@ quickcheck_macros = "1.0"
 itertools = "0.10"
 paste = "1.0"
 
-ink_lang = { version = "3.0.0-rc8", path = "../lang/", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../lang/", default-features = false }
 
 [features]
 default = ["std"]
diff --git a/crates/storage/derive/Cargo.toml b/crates/storage/derive/Cargo.toml
index 9e5c49c308..945d422535 100644
--- a/crates/storage/derive/Cargo.toml
+++ b/crates/storage/derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ink_storage_derive"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>", "Robin Freyler <robin@parity.io>"]
 edition = "2021"
 
@@ -25,8 +25,8 @@ synstructure = "0.12.4"
 
 [dev-dependencies]
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive", "full"] }
-ink_env = { version = "3.0.0-rc8", path = "../../env" }
-ink_primitives = { version = "3.0.0-rc8", path = "../../primitives" }
-ink_metadata = { version = "3.0.0-rc8", path = "../../metadata" }
-ink_prelude = { version = "3.0.0-rc8", path = "../../prelude/" }
-ink_storage = { version = "3.0.0-rc8", path = ".." }
+ink_env = { version = "3.0.0-rc9", path = "../../env" }
+ink_primitives = { version = "3.0.0-rc9", path = "../../primitives" }
+ink_metadata = { version = "3.0.0-rc9", path = "../../metadata" }
+ink_prelude = { version = "3.0.0-rc9", path = "../../prelude/" }
+ink_storage = { version = "3.0.0-rc9", path = ".." }
diff --git a/examples/contract-terminate/Cargo.toml b/examples/contract-terminate/Cargo.toml
index a6bd6cc214..6340cc8d2f 100644
--- a/examples/contract-terminate/Cargo.toml
+++ b/examples/contract-terminate/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "contract_terminate"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/contract-transfer/Cargo.toml b/examples/contract-transfer/Cargo.toml
index a6300dae37..6505fb542b 100644
--- a/examples/contract-transfer/Cargo.toml
+++ b/examples/contract-transfer/Cargo.toml
@@ -1,16 +1,16 @@
 [package]
 name = "contract_transfer"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false, features = [ "ink-debug" ] }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
-ink_prelude = { version = "3.0.0-rc8", path = "../../crates/prelude", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false, features = [ "ink-debug" ] }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
+ink_prelude = { version = "3.0.0-rc9", path = "../../crates/prelude", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/delegator/Cargo.toml b/examples/delegator/Cargo.toml
index 235d18ec90..b24d76962b 100644
--- a/examples/delegator/Cargo.toml
+++ b/examples/delegator/Cargo.toml
@@ -1,21 +1,21 @@
 [package]
 name = "delegator"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 
-adder = { version = "3.0.0-rc8", path = "adder", default-features = false, features = ["ink-as-dependency"] }
-subber = { version = "3.0.0-rc8", path = "subber", default-features = false, features = ["ink-as-dependency"] }
-accumulator = { version = "3.0.0-rc8", path = "accumulator", default-features = false, features = ["ink-as-dependency"] }
+adder = { version = "3.0.0-rc9", path = "adder", default-features = false, features = ["ink-as-dependency"] }
+subber = { version = "3.0.0-rc9", path = "subber", default-features = false, features = ["ink-as-dependency"] }
+accumulator = { version = "3.0.0-rc9", path = "accumulator", default-features = false, features = ["ink-as-dependency"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
 
 [lib]
diff --git a/examples/delegator/accumulator/Cargo.toml b/examples/delegator/accumulator/Cargo.toml
index 6b3fa551d4..63c3e3e031 100644
--- a/examples/delegator/accumulator/Cargo.toml
+++ b/examples/delegator/accumulator/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "accumulator"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/delegator/adder/Cargo.toml b/examples/delegator/adder/Cargo.toml
index 47b6e19c46..ee596ba08b 100644
--- a/examples/delegator/adder/Cargo.toml
+++ b/examples/delegator/adder/Cargo.toml
@@ -1,17 +1,17 @@
 [package]
 name = "adder"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../../crates/lang", default-features = false }
 
-accumulator = { version = "3.0.0-rc8", path = "../accumulator", default-features = false, features = ["ink-as-dependency"] }
+accumulator = { version = "3.0.0-rc9", path = "../accumulator", default-features = false, features = ["ink-as-dependency"] }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/delegator/subber/Cargo.toml b/examples/delegator/subber/Cargo.toml
index 6cc7c8bbee..7f507a2d25 100644
--- a/examples/delegator/subber/Cargo.toml
+++ b/examples/delegator/subber/Cargo.toml
@@ -1,17 +1,17 @@
 [package]
 name = "subber"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../../crates/lang", default-features = false }
 
-accumulator = { version = "3.0.0-rc8", path = "../accumulator", default-features = false, features = ["ink-as-dependency"] }
+accumulator = { version = "3.0.0-rc9", path = "../accumulator", default-features = false, features = ["ink-as-dependency"] }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/dns/Cargo.toml b/examples/dns/Cargo.toml
index e943712751..31a0c760a3 100644
--- a/examples/dns/Cargo.toml
+++ b/examples/dns/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "dns"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/erc1155/Cargo.toml b/examples/erc1155/Cargo.toml
index ec29904b51..bb78416248 100644
--- a/examples/erc1155/Cargo.toml
+++ b/examples/erc1155/Cargo.toml
@@ -1,16 +1,16 @@
 [package]
 name = "erc1155"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false, features = ["ink-debug"] }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
-ink_prelude = { version = "3.0.0-rc8", path = "../../crates/prelude", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false, features = ["ink-debug"] }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
+ink_prelude = { version = "3.0.0-rc9", path = "../../crates/prelude", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/erc20/Cargo.toml b/examples/erc20/Cargo.toml
index 7234ac890e..e2c10d5e7f 100644
--- a/examples/erc20/Cargo.toml
+++ b/examples/erc20/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "erc20"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/erc721/Cargo.toml b/examples/erc721/Cargo.toml
index fc3c1a36dd..1a85471f58 100644
--- a/examples/erc721/Cargo.toml
+++ b/examples/erc721/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "erc721"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/flipper/Cargo.toml b/examples/flipper/Cargo.toml
index c46754b97d..74257a3675 100644
--- a/examples/flipper/Cargo.toml
+++ b/examples/flipper/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "flipper"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/incrementer/Cargo.toml b/examples/incrementer/Cargo.toml
index 30da41a6c6..3ee378f4e9 100644
--- a/examples/incrementer/Cargo.toml
+++ b/examples/incrementer/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "incrementer"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/multisig/Cargo.toml b/examples/multisig/Cargo.toml
index b76c08a477..92dfc28abb 100755
--- a/examples/multisig/Cargo.toml
+++ b/examples/multisig/Cargo.toml
@@ -5,12 +5,12 @@ authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
-ink_prelude = { version = "3.0.0-rc8", path = "../../crates/prelude", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
+ink_prelude = { version = "3.0.0-rc9", path = "../../crates/prelude", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/proxy/Cargo.toml b/examples/proxy/Cargo.toml
index 6df464f8db..a58be40a97 100644
--- a/examples/proxy/Cargo.toml
+++ b/examples/proxy/Cargo.toml
@@ -1,16 +1,16 @@
 [package]
 name = "proxy"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_prelude = { version = "3.0.0-rc8", path = "../../crates/prelude", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_prelude = { version = "3.0.0-rc9", path = "../../crates/prelude", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/rand-extension/Cargo.toml b/examples/rand-extension/Cargo.toml
index 4918b3067d..fb87b6569b 100755
--- a/examples/rand-extension/Cargo.toml
+++ b/examples/rand-extension/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "rand_extension"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/trait-erc20/Cargo.toml b/examples/trait-erc20/Cargo.toml
index bc21f64c3e..1ce383e2f6 100644
--- a/examples/trait-erc20/Cargo.toml
+++ b/examples/trait-erc20/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "trait_erc20"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/trait-flipper/Cargo.toml b/examples/trait-flipper/Cargo.toml
index aff46ca691..60ab4325cf 100644
--- a/examples/trait-flipper/Cargo.toml
+++ b/examples/trait-flipper/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "trait_flipper"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
diff --git a/examples/trait-incrementer/Cargo.toml b/examples/trait-incrementer/Cargo.toml
index 3741c05c65..47861afa54 100644
--- a/examples/trait-incrementer/Cargo.toml
+++ b/examples/trait-incrementer/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "trait-incrementer"
-version = "3.0.0-rc8"
+version = "3.0.0-rc9"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-ink_primitives = { version = "3.0.0-rc8", path = "../../crates/primitives", default-features = false }
-ink_metadata = { version = "3.0.0-rc8", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
-ink_env = { version = "3.0.0-rc8", path = "../../crates/env", default-features = false }
-ink_storage = { version = "3.0.0-rc8", path = "../../crates/storage", default-features = false }
-ink_lang = { version = "3.0.0-rc8", path = "../../crates/lang", default-features = false }
+ink_primitives = { version = "3.0.0-rc9", path = "../../crates/primitives", default-features = false }
+ink_metadata = { version = "3.0.0-rc9", path = "../../crates/metadata", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "3.0.0-rc9", path = "../../crates/env", default-features = false }
+ink_storage = { version = "3.0.0-rc9", path = "../../crates/storage", default-features = false }
+ink_lang = { version = "3.0.0-rc9", path = "../../crates/lang", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
 scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }