diff --git a/CHANGELOG.md b/CHANGELOG.md
index d12e0fa..170c8dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## unreleased
+## 4.5.2
 
  * fix arity difference between Procs and lambdas (see [issue #293](https://github.com/aasm/aasm/issues/293) for details)
 
diff --git a/lib/aasm/version.rb b/lib/aasm/version.rb
index a9003e3..8bfa7ae 100644
--- a/lib/aasm/version.rb
+++ b/lib/aasm/version.rb
@@ -1,3 +1,3 @@
 module AASM
-  VERSION = "4.5.1"
+  VERSION = "4.5.2"
 end