diff --git a/testing/mozharness/mozharness.json b/testing/mozharness/mozharness.json
index 573ff276eb6..c57773f838a 100644
--- a/testing/mozharness/mozharness.json
+++ b/testing/mozharness/mozharness.json
@@ -1,4 +1,4 @@
 {
     "repo": "https://hg.mozilla.org/build/mozharness",
-    "revision": "21eea84e3091"
+    "revision": "76ddf456e51b"
 }