diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d5bd889b2..a3f4ae8dcf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 1.14.5
+
+ * Upgrade `acorn-6to5`.
+
 # 1.14.4
 
  * Merge pretzel maps and method binding.
diff --git a/package.json b/package.json
index c7b2c62839..90a8f64e39 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "chokidar": "0.11.1",
     "source-map-support": "0.2.8",
     "esutils": "1.1.6",
-    "acorn-6to5": "0.9.1-10",
+    "acorn-6to5": "0.9.1-11",
     "estraverse": "1.8.0",
     "private": "0.1.6"
   },