diff --git a/NEWS b/NEWS
index aa0663df..63e65f43 100644
--- a/NEWS
+++ b/NEWS
@@ -30,6 +30,8 @@
     version of RubyMotion, as a String. Cleaned up other RUBY_ constants.
   * Added the `spec:device' Rake task which will run the spec/test suite on the
     device via the debugger.
+  * Improved Hash#[]= performance with array as hash key. If use the same
+    length array as hash key, it make 400 times faster.
 
 = RubyMotion 1.25 =
 
diff --git a/vm b/vm
index b9347420..ceecbf6a 160000
--- a/vm
+++ b/vm
@@ -1 +1 @@
-Subproject commit b93474205aaa3af4349aff9e73f40147a5beaa8d
+Subproject commit ceecbf6aa57fecc4145c4e668fc02b9e1bafd587