diff --git a/app/src/main/java/eu/faircode/email/ApplicationEx.java b/app/src/main/java/eu/faircode/email/ApplicationEx.java
index 11aee2d1a3..302e949c6b 100644
--- a/app/src/main/java/eu/faircode/email/ApplicationEx.java
+++ b/app/src/main/java/eu/faircode/email/ApplicationEx.java
@@ -204,6 +204,7 @@ public class ApplicationEx extends Application {
             editor.remove("folder_sync");
         }
 
+        editor.putInt("previous_version", version);
         editor.putInt("version", BuildConfig.VERSION_CODE);
 
         editor.apply();