diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2786127..5920b14 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,9 @@
 # RTLCSS Changelog
+## 4.0.0 - 09 Aug. 2022
+
+* Update dependencies, Internal code refactoring, cleanup and optimizations. **Thanks @XhmikosR**
+* Support flipping `justify-content`, `justify-items` and `justify-self`. **Thanks @mbehzad**
+* Support flipping length position without using `calc` option.
 
 ## 3.5.0 - 02 Nov. 2021
 
diff --git a/package-lock.json b/package-lock.json
index e6a60c8..f48f439 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "rtlcss",
-  "version": "3.5.0",
+  "version": "4.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
diff --git a/package.json b/package.json
index 3c6fac3..d5faf0b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "author": "Mohammad Younes",
   "name": "rtlcss",
-  "version": "3.5.0",
+  "version": "4.0.0",
   "description": "Framework for transforming cascading style sheets (CSS) from left-to-right (LTR) to right-to-left (RTL)",
   "homepage": "https://rtlcss.com/",
   "bugs": {