diff --git a/Cargo.toml b/Cargo.toml
index 0418fee7..5db0cef2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,8 +13,8 @@ exclude = ["/book", "/R-package", "README.qmd"]
 rust-version = "1.65.0"
 
 [dependencies]
-savvy-ffi = { version = "0.6.6", path = "./savvy-ffi" }
-savvy-macro = { version = "0.6.6", path = "./savvy-macro" }
+savvy-ffi = { version = "0.6.7-beta.1", path = "./savvy-ffi" }
+savvy-macro = { version = "0.6.7-beta.1", path = "./savvy-macro" }
 once_cell = "1"
 num-complex = { version = "0.4.5", optional = true }
 
@@ -62,7 +62,7 @@ members = ["savvy-macro", "savvy-bindgen", "savvy-cli", "savvy-ffi", "xtask"]
 resolver = "2"
 
 [workspace.package]
-version = "0.6.6"
+version = "0.6.7-beta.1"
 edition = "2021"
 authors = ["Hiroaki Yutani"]
 license = "MIT"
diff --git a/savvy-cli/Cargo.toml b/savvy-cli/Cargo.toml
index c55b5b0f..115310bd 100644
--- a/savvy-cli/Cargo.toml
+++ b/savvy-cli/Cargo.toml
@@ -19,7 +19,7 @@ clap = { version = "4", features = ["derive"] }
 async-process = "2"
 futures-lite = "2"
 
-savvy-bindgen = { version = "0.6.6", path = "../savvy-bindgen", features = [
+savvy-bindgen = { version = "0.6.7-beta.1", path = "../savvy-bindgen", features = [
     "use_formatter",
 ] }
 dirs = "5"
diff --git a/savvy-macro/Cargo.toml b/savvy-macro/Cargo.toml
index ea919846..9b32f4d7 100644
--- a/savvy-macro/Cargo.toml
+++ b/savvy-macro/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro2 = "1"
 quote = "1"
 syn = { version = "2", features = ["full", "extra-traits"] }
 
-savvy-bindgen = { version = "0.6.6", path = "../savvy-bindgen" }
+savvy-bindgen = { version = "0.6.7-beta.1", path = "../savvy-bindgen" }
 
 [dev-dependencies]
 trybuild = "1"