diff --git a/Web/push_notifications.py b/Web/push_notifications.py
index 6a3b969..078a989 100644
--- a/Web/push_notifications.py
+++ b/Web/push_notifications.py
@@ -117,7 +117,7 @@ def save_push_subscription(username, subscription_obj):
         subs_col = get_push_subscriptions_collection(db)
         
         # Create unique hash of subscription to avoid duplicates
-        sub_hash = hashlib.md5(
+        sub_hash = hashlib.shake_256(
             f"{username}:{subscription_obj['endpoint']}".encode()
         ).hexdigest()