diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c733bd..0fd875d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 3.0.5
+
+ * bugfix: get rid of error with old rubygems versions
+
 ## 3.0.4
 
  * bugfix: Subclasses of aasm-enabled classes don't lose settings anymore (thanks to codez)
diff --git a/lib/aasm/version.rb b/lib/aasm/version.rb
index c63e375..e8817d5 100644
--- a/lib/aasm/version.rb
+++ b/lib/aasm/version.rb
@@ -1,3 +1,3 @@
 module AASM
-  VERSION = "3.0.4"
+  VERSION = "3.0.5"
 end