diff --git a/regex-syntax/Cargo.toml b/regex-syntax/Cargo.toml
index eb3ada9e78..7b56f32d23 100644
--- a/regex-syntax/Cargo.toml
+++ b/regex-syntax/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "regex-syntax"
-version = "0.6.20"  #:version
+version = "0.6.21"  #:version
 authors = ["The Rust Project Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rust-lang/regex"