diff --git a/lib/OpenLayers.js b/lib/OpenLayers.js
index 11176dd459..ab111a543b 100644
--- a/lib/OpenLayers.js
+++ b/lib/OpenLayers.js
@@ -425,4 +425,4 @@
  * When asking questions or reporting issues, make sure to include the output of
  *     OpenLayers.VERSION_NUMBER in the question or issue-description.
  */
-OpenLayers.VERSION_NUMBER="Release 2.13 dev";
+OpenLayers.VERSION_NUMBER="Release 2.13-rc1";
diff --git a/lib/OpenLayers/SingleFile.js b/lib/OpenLayers/SingleFile.js
index 0ad8d449dc..9da756e366 100644
--- a/lib/OpenLayers/SingleFile.js
+++ b/lib/OpenLayers/SingleFile.js
@@ -7,7 +7,7 @@ var OpenLayers = {
     /**
      * Constant: VERSION_NUMBER
      */
-    VERSION_NUMBER: "Release 2.13 dev",
+    VERSION_NUMBER: "Release 2.13-rc1",
 
     /**
      * Constant: singleFile