diff --git a/src/org/lineageos/updater/UpdatesActivity.java b/src/org/lineageos/updater/UpdatesActivity.java
index 7f07004..593065a 100644
--- a/src/org/lineageos/updater/UpdatesActivity.java
+++ b/src/org/lineageos/updater/UpdatesActivity.java
@@ -64,6 +64,7 @@ import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.UUID;
 
 public class UpdatesActivity extends UpdatesListActivity {
 
@@ -317,7 +318,7 @@ public class UpdatesActivity extends UpdatesListActivity {
 
     private void downloadUpdatesList(final boolean manualRefresh) {
         final File jsonFile = Utils.getCachedUpdateList(this);
-        final File jsonFileTmp = new File(jsonFile.getAbsolutePath() + ".tmp");
+        final File jsonFileTmp = new File(jsonFile.getAbsolutePath() + UUID.randomUUID());
         String url = Utils.getServerURL(this);
         Log.d(TAG, "Checking " + url);
 
diff --git a/src/org/lineageos/updater/UpdatesCheckReceiver.java b/src/org/lineageos/updater/UpdatesCheckReceiver.java
index 9332bd9..c7f1b4e 100644
--- a/src/org/lineageos/updater/UpdatesCheckReceiver.java
+++ b/src/org/lineageos/updater/UpdatesCheckReceiver.java
@@ -39,6 +39,7 @@ import java.io.IOException;
 import java.util.Calendar;
 import java.util.Date;
 import java.util.List;
+import java.util.UUID;
 
 public class UpdatesCheckReceiver extends BroadcastReceiver {
 
@@ -74,7 +75,7 @@ public class UpdatesCheckReceiver extends BroadcastReceiver {
         }
 
         final File json = Utils.getCachedUpdateList(context);
-        final File jsonNew = new File(json.getAbsolutePath() + ".tmp");
+        final File jsonNew = new File(json.getAbsolutePath() + UUID.randomUUID());
         String url = Utils.getServerURL(context);
         DownloadClient.DownloadCallback callback = new DownloadClient.DownloadCallback() {
             @Override