diff --git a/lib/mysql2/version.rb b/lib/mysql2/version.rb
index bd815bfbb..d84abfc72 100644
--- a/lib/mysql2/version.rb
+++ b/lib/mysql2/version.rb
@@ -1,3 +1,3 @@
 module Mysql2
-  VERSION = "0.5.5".freeze
+  VERSION = "0.5.6".freeze
 end