diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4fcd2c8c36..0d5eb2eb02 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,12 @@ _Note: Gaps between patch versions are faulty/broken releases._
 
 See [CHANGELOG - 6to5](CHANGELOG-6to5.md) for the pre-4.0.0 version changelog.
 
+## 4.6.3
+
+ * **Bug Fix**
+  * Fix `arguments` being incorrectly aliased in arrow function rest parameter optimisation.
+  * Make deoptimisation trigger safer.
+
 ## 4.6.1
 
  * **Bug Fix**
diff --git a/packages/babel-runtime/package.json b/packages/babel-runtime/package.json
index 248f26b414..b1ce5e93dd 100644
--- a/packages/babel-runtime/package.json
+++ b/packages/babel-runtime/package.json
@@ -1,7 +1,7 @@
 {
   "name": "babel-runtime",
   "description": "babel selfContained runtime",
-  "version": "4.6.1",
+  "version": "4.6.3",
   "repository": "babel/babel",
   "author": "Sebastian McKenzie <sebmck@gmail.com>"
 }
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