diff --git a/VERSION b/VERSION
index 4ed7f1471fd..70bdfecc0c6 100644
--- a/VERSION
+++ b/VERSION
@@ -1,4 +1,4 @@
 MYSQL_VERSION_MAJOR=5
 MYSQL_VERSION_MINOR=5
 MYSQL_VERSION_PATCH=28
-MYSQL_VERSION_EXTRA=
+MYSQL_VERSION_EXTRA=a
diff --git a/cmake/mysql_version.cmake b/cmake/mysql_version.cmake
index e6b9d3e7edf..33aa33c9e5b 100644
--- a/cmake/mysql_version.cmake
+++ b/cmake/mysql_version.cmake
@@ -65,7 +65,7 @@ MACRO(GET_MYSQL_VERSION)
   MARK_AS_ADVANCED(VERSION MYSQL_VERSION_ID MYSQL_BASE_VERSION)
   SET(CPACK_PACKAGE_VERSION_MAJOR ${MAJOR_VERSION})
   SET(CPACK_PACKAGE_VERSION_MINOR ${MINOR_VERSION})
-  SET(CPACK_PACKAGE_VERSION_PATCH ${PATCH_VERSION})
+  SET(CPACK_PACKAGE_VERSION_PATCH ${PATCH_VERSION}${EXTRA_VERSION})
 ENDMACRO()
 
 # Get mysql version and other interesting variables