diff --git a/CHANGELOG.md b/CHANGELOG.md
index 26fd9d5..0a74b10 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [4.0.1](https://github.com/markedjs/html-differ/compare/v4.0.0...v4.0.1) (2022-03-12)
+
+
+### Bug Fixes
+
+* avoid memory leak and concurrency issues ([#157](https://github.com/markedjs/html-differ/issues/157)) ([b5f8c58](https://github.com/markedjs/html-differ/commit/b5f8c58e21af3f264ccf45e6f52abeebd601b3f1))
+
 # [4.0.0](https://github.com/markedjs/html-differ/compare/v3.0.4...v4.0.0) (2021-11-28)
 
 
diff --git a/package-lock.json b/package-lock.json
index 5a9f114..4150bcf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@markedjs/html-differ",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@markedjs/html-differ",
-      "version": "4.0.0",
+      "version": "4.0.1",
       "dependencies": {
         "chalk": "^5.0.0",
         "coa": "^2.0.2",
diff --git a/package.json b/package.json
index a514065..09e4f98 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@markedjs/html-differ",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "Compares two HTML",
   "keywords": [
     "html-differ",