diff --git a/CHANGELOG.md b/CHANGELOG.md
index cca41ddc..e99cd418 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Versions
 
+## v6.4.1
+* Update iOS SDK version - 6.4.1
+* Update Android SDK version - 6.4.1
+* Fixed a bug causing a crash in Unity apps
+
 ## v6.4.0
 * Update iOS SDK version - 6.4.0
 * Update Android SDK version - 6.4.0
diff --git a/README.md b/README.md
index ce427895..5f590bf5 100755
--- a/README.md
+++ b/README.md
@@ -25,8 +25,8 @@
 
 ### <a id="plugin-build-for"> This plugin is built for
 
-- Android AppsFlyer SDK **v6.3.2** 
-- iOS AppsFlyer SDK **v6.3.5**
+- Android AppsFlyer SDK **v6.4.1** 
+- iOS AppsFlyer SDK **v6.4.1**
 
 ## <a id="breaking-changes"> 	❗❗ Breaking changes when updating to 6.3.0 ❗❗