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 199a6c8b1..e4007e290 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
@@ -2,18 +2,31 @@ package io.github.wulkanowy.data.db.dao;
 
 import android.content.Context;
 
+import org.greenrobot.greendao.database.Database;
+
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
 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;
 
 @Singleton
 public class DbHelper extends DaoMaster.DevOpenHelper {
 
+    private SharedPrefContract sharedPref;
+
     @Inject
-    DbHelper(@ApplicationContext Context context, @DatabaseInfo String dbName) {
+    DbHelper(@ApplicationContext Context context, @DatabaseInfo String dbName,
+             SharedPrefContract sharedPref) {
         super(context, dbName);
+        this.sharedPref = sharedPref;
+    }
+
+    @Override
+    public void onUpgrade(Database db, int oldVersion, int newVersion) {
+        super.onUpgrade(db, oldVersion, newVersion);
+        sharedPref.setCurrentUserId(0);
     }
 }