diff --git a/build/release.js b/build/release.js
index c394eac32..42c2ad10e 100644
--- a/build/release.js
+++ b/build/release.js
@@ -24,12 +24,12 @@ module.exports = function( Release ) {
 		 * The tag for compat is different
 		 * This sets a different new version for the source repo,
 		 * but after building with the correct tag
-		 * e.g. 3.0.0-compat
+		 * e.g. 3.0.0+compat
 		 */
 		_createTag: function( paths ) {
 			Release.distVersion = Release.newVersion;
 			Release.newVersion = Release.newVersion
-				.replace( /(\d+\.\d+\.\d+)/, "$1-compat" );
+				.replace( /(\d+\.\d+\.\d+)/, "$1+compat" );
 			return createTag( paths );
 		},
 		/**
diff --git a/src/core.js b/src/core.js
index 7626bb5ab..df70e63b6 100644
--- a/src/core.js
+++ b/src/core.js
@@ -11,7 +11,7 @@ define([
 ], function( deletedIds, slice, concat, push, indexOf, class2type, toString, hasOwn, support ) {
 
 var
-	version = "@VERSION",
+	version = "@VERSION+compat",
 
 	// Define a local copy of jQuery
 	jQuery = function( selector, context ) {