diff --git a/History.md b/History.md
index db80353c..704ef0fe 100644
--- a/History.md
+++ b/History.md
@@ -1,3 +1,7 @@
+### 2.1.5 - *April 19 2016*
+  * Cherry picked fix for native easing TypeError exception when using groups.
+    https://github.com/web-animations/web-animations-next/pull/423
+
 ### 2.1.4 - *December 1 2015*
   * Use `Date.now()` instead of `performace.now()` for mobile Safari.
 
diff --git a/package.json b/package.json
index dfc39f02..2f389b06 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
     "type": "git",
     "url": "https://github.com/web-animations/web-animations-js.git"
   },
-  "version": "2.1.4",
+  "version": "2.1.5",
   "keywords": [
     "animations",
     "polyfill"