diff --git a/CHANGELOG.md b/CHANGELOG.md
index a778b911d1..130ef2e9b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,11 @@
 
 _Note: Gaps between patch versions are faulty/broken releases._
 
+## 3.6.3
+
+ * **Internal**
+  * Upgrade `acorn-6to5`.
+
 ## 3.6.2
 
  * **Polish**
diff --git a/package.json b/package.json
index 936db745f4..579c8fc300 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "test": "make test"
   },
   "dependencies": {
-    "acorn-6to5": "0.11.1-30",
+    "acorn-6to5": "0.11.1-31",
     "ast-types": "~0.6.1",
     "chalk": "^0.5.1",
     "chokidar": "0.12.6",