diff --git a/VERSION b/VERSION
index b9002ef5c4d..df06ca3b38a 100644
--- a/VERSION
+++ b/VERSION
@@ -1,4 +1,4 @@
 MYSQL_VERSION_MAJOR=5
 MYSQL_VERSION_MINOR=5
-MYSQL_VERSION_PATCH=65
+MYSQL_VERSION_PATCH=66
 MYSQL_VERSION_EXTRA=