diff --git a/CHANGELOG.md b/CHANGELOG.md
index daa10d016..264fc6c04 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Delta Chat Android Changelog
 
+## v1.52.1 Testrun
+2025-01
+
+* the app now requires less storage on your SD card by deduplicating newly received/sent files
+* some small bug fixes
+* update translations
+* update to core 1.155.1
+
 ## v1.52.0
 2025-01
 
diff --git a/build.gradle b/build.gradle
index f3d37d1d5..eed689805 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,8 +27,8 @@ android {
     useLibrary 'org.apache.http.legacy'
 
     defaultConfig {
-        versionCode 709
-        versionName "1.52.0"
+        versionCode 710
+        versionName "1.52.1"
 
         applicationId "com.b44t.messenger"
         multiDexEnabled true