diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d789b8208..586f7a14e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 1.12.7
+
+ * Update to latest `acorn-6to5`.
+
 # 1.12.6
 
  * Update to latest `acorn-6to5`.
diff --git a/package.json b/package.json
index db5a63a131..cfe6d90250 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "chokidar": "0.10.5",
     "source-map-support": "0.2.8",
     "esutils": "1.1.4",
-    "acorn-6to5": "https://github.com/6to5/acorn-6to5/archive/90db0ad3c6219015a36fc3c87b85231b117cf3ea.tar.gz",
+    "acorn-6to5": "https://github.com/6to5/acorn-6to5/archive/a6c34ba73e215bd16ee585f6794f6a6587820c58.tar.gz",
     "estraverse": "^1.7.0"
   },
   "devDependencies": {