diff --git a/Changelog.md b/Changelog.md
index 0bfadb09..d49a0b26 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,10 @@
+## [4.13.1](https://github.com/luin/ioredis/compare/v4.13.0...v4.13.1) (2019-07-22)
+
+
+### Bug Fixes
+
+* keep sentinels of options immutable ([bacb7e1](https://github.com/luin/ioredis/commit/bacb7e1)), closes [#936](https://github.com/luin/ioredis/issues/936)
+
 # [4.13.0](https://github.com/luin/ioredis/compare/v4.12.2...v4.13.0) (2019-07-19)
 
 
diff --git a/package-lock.json b/package-lock.json
index e4cb1a4b..27b4bfc2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "ioredis",
-  "version": "4.13.0",
+  "version": "4.13.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index ce8b1fcd..395cd6e4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ioredis",
-  "version": "4.13.0",
+  "version": "4.13.1",
   "description": "A robust, performance-focused and full-featured Redis client for Node.js.",
   "main": "built/index.js",
   "files": [