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diff --git a/AppsFlyerUnityPlugin_v4.22.0.unitypackage b/AppsFlyerUnityPlugin_v4.22.0.unitypackage
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diff --git a/RELEASENOTES.md b/RELEASENOTES.md
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 # Release Notes
 
+### 4.22.0
+* Updated Android SDK to v5.1.1
+* Updated iOS SDK to v5.1.0
+* removed sha1 & md5 email hashing
+* Bug fixes and maintenance
+
 ### 4.21.1
 * Bug fixes and maintenance