diff --git a/rocket-chat/rocketchat.yml b/rocket-chat/rocketchat.yml
index d9eb8b2..48d16b8 100644
--- a/rocket-chat/rocketchat.yml
+++ b/rocket-chat/rocketchat.yml
@@ -25,6 +25,31 @@ services:
     image: mongo:6
     networks:
       - rocketchat-net
+    command:
+      - sh
+      - -lc
+      - |
+        set -e
+        echo "Waiting for Mongo to be ready..."
+        until mongosh --host mongo:27017 --quiet --eval 'db.adminCommand({ ping: 1 }).ok' | grep -q 1; do
+          sleep 2
+        done
+        echo "Checking replica set..."
+        mongosh --host mongo:27017 --quiet --eval '
+          try {
+            if (rs.status().ok === 1) {
+              print("Replica set already initiated.");
+            } else { throw new Error("status not ok"); }
+          } catch (e) {
+            print("Initiating replica set...");
+            rs.initiate({ _id: "rs0", members: [ { _id: 0, host: "mongo:27017" } ] });
+          }
+        '
+        echo "Waiting for PRIMARY..."
+        until mongosh --host mongo:27017 --quiet --eval 'db.isMaster().ismaster' | grep -q true; do
+          sleep 2
+        done
+        echo "PRIMARY is ready."
     deploy:
       restart_policy:
         condition: on-failure
@@ -40,7 +65,6 @@ services:
       - PORT=3000
       - ROOT_URL=https://chat.emrekirman.xyz              # <- kendi domainini yaz
       - MONGO_URL=mongodb://mongo:27017/rocketchat?replicaSet=rs0
-      - MONGO_OPLOG_URL=mongodb://mongo:27017/local?replicaSet=rs0
       - REDIS_URL=redis://:98836@redis:6379
       # İsteğe bağlı: Türkçe varsayılan dil
       - OVERWRITE_SETTING_Language=tr