diff --git a/CHANGELOG.md b/CHANGELOG.md
index 707d575..281769e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,14 @@
+Version 3.2.1
+=============
+
+Changes
+-------
+- fixed the parsing of free variables in classic notation
+
+Thanks
+-------
+- @hiratara for implementing the fix
+
 Version 3.2.0
 =============
 
diff --git a/Cargo.toml b/Cargo.toml
index 9ecde39..6d71247 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lambda_calculus"
-version = "3.2.0"
+version = "3.2.1"
 description = "A simple, zero-dependency implementation of pure lambda calculus in Safe Rust"
 repository = "https://github.com/ljedrz/lambda_calculus"
 documentation = "https://docs.rs/lambda_calculus"