diff --git a/lockfile.json b/lockfile.json
index 316cf52b8..955fe2c60 100644
--- a/lockfile.json
+++ b/lockfile.json
@@ -75,7 +75,7 @@
     "revision": "eed1595d830407b49775aa33b871a9400e5a44e6"
   },
   "glimmer": {
-    "revision": "2dd4ab71bc38f62f1535ffef1c8226612660ee0a"
+    "revision": "429c946407d39e3a0fe4dd60916ba34109a7df91"
   },
   "glsl": {
     "revision": "26ba31a3f5a85ebed5d71e49eef11a003bed782b"