diff --git a/android/app/build.gradle b/android/app/build.gradle
index 97f1728a23c..95ff5493032 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -147,8 +147,8 @@ android {
         applicationId "com.zulipmobile"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 220
-        versionName "27.220"
+        versionCode 221
+        versionName "27.221"
     }
     signingConfigs {
         // The RN v0.60 template app suggests configuring a debug
diff --git a/docs/changelog.md b/docs/changelog.md
index ca530449c5c..b7e5a3a977e 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -39,6 +39,9 @@ It doesn't include
 
 ## Unreleased
 
+
+## 27.221 (2023-12-07)
+
 ### Highlights for users
 
 * New "Send a test notification" button in the notification settings,
diff --git a/ios/ZulipMobile/Info.plist b/ios/ZulipMobile/Info.plist
index 1149e19f3cf..9f7262724ca 100644
--- a/ios/ZulipMobile/Info.plist
+++ b/ios/ZulipMobile/Info.plist
@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>27.220</string>
+	<string>27.221</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleURLTypes</key>