diff --git a/CHANGELOG.md b/CHANGELOG.md
index ddb95a8..227f531 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# Version 0.6.4
+- Enable cargo fmt check (#19)
+
 # Version 0.6.3
 - check input length in decrypt (#17)
 
diff --git a/Cargo.toml b/Cargo.toml
index 9f2fa3e..e23b3c7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "libaes"
-version = "0.6.3"
+version = "0.6.4"
 authors = ["Han Xu <keepsimple@gmail.com>"]
 edition = "2018"
 description = "AES cipher in safe Rust with no dependencies"