diff --git a/NEWS b/NEWS
index 13e1e6ab..dadef418 100644
--- a/NEWS
+++ b/NEWS
@@ -23,6 +23,7 @@
   * Fixed a bug where the cycle detector did not work for Array/Hash objects.
   * Improved Object#instance_variable_set performance. ~20% faster.
   * Improved method dispatcher performance. ~5% faster.
+  * Improved fine-grained lock performance. ~40% faster.
 
 = RubyMotion 2.24 =
 
diff --git a/vm b/vm
index e15f4691..76b24a52 160000
--- a/vm
+++ b/vm
@@ -1 +1 @@
-Subproject commit e15f46914507155edaffbb1cbfa261e3e760504d
+Subproject commit 76b24a52a06148437bb8abb0fc937ea7d49377b7