diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6215289..e8b97e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## v1.5.1
+
+### Improvements
+
+- Improve performance (#28)
+
 ## v1.5.0
 
 ### New Features
diff --git a/lib/propane/version.rb b/lib/propane/version.rb
index de303eb..6e3ee57 100644
--- a/lib/propane/version.rb
+++ b/lib/propane/version.rb
@@ -1,3 +1,3 @@
 class Propane
-  VERSION = "1.5.0"
+  VERSION = "1.5.1"
 end