diff --git a/app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java b/app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java
index e4007e29..9392bae5 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java
@@ -1,8 +1,10 @@
 package io.github.wulkanowy.data.db.dao;
 
 import android.content.Context;
+import android.database.sqlite.SQLiteDatabase;
 
 import org.greenrobot.greendao.database.Database;
+import org.greenrobot.greendao.database.StandardDatabase;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
@@ -11,6 +13,7 @@ import io.github.wulkanowy.data.db.dao.entities.DaoMaster;
 import io.github.wulkanowy.data.db.shared.SharedPrefContract;
 import io.github.wulkanowy.di.annotations.ApplicationContext;
 import io.github.wulkanowy.di.annotations.DatabaseInfo;
+import io.github.wulkanowy.utils.LogUtils;
 
 @Singleton
 public class DbHelper extends DaoMaster.DevOpenHelper {
@@ -26,7 +29,18 @@ public class DbHelper extends DaoMaster.DevOpenHelper {
 
     @Override
     public void onUpgrade(Database db, int oldVersion, int newVersion) {
-        super.onUpgrade(db, oldVersion, newVersion);
+        cleanUserData(db, oldVersion, newVersion);
+    }
+
+    @Override
+    public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        cleanUserData(new StandardDatabase(db), oldVersion, newVersion);
+    }
+
+    private void cleanUserData(Database database, int oldVersion, int newVersion) {
+        LogUtils.info("Cleaning user data oldVersion=" + oldVersion + " newVersion=" + newVersion);
+        DaoMaster.dropAllTables(database, true);
+        onCreate(database);
         sharedPref.setCurrentUserId(0);
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/utils/LogUtils.java b/app/src/main/java/io/github/wulkanowy/utils/LogUtils.java
index f3b5b3ec..f59bbf64 100644
--- a/app/src/main/java/io/github/wulkanowy/utils/LogUtils.java
+++ b/app/src/main/java/io/github/wulkanowy/utils/LogUtils.java
@@ -19,4 +19,8 @@ public final class LogUtils {
     public static void error(String message) {
         Log.e(AppConstant.APP_NAME, message);
     }
+
+    public static void info(String message) {
+        Log.i(AppConstant.APP_NAME, message);
+    }
 }