diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 824e15b07d4cbd374ce44eefaf621193f070a02f..28188a3834ed00509553cef3b1819cdcec3cfd9f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,7 +14,7 @@ submodule_fetch:
   script:
     - chmod 600 .drawing-app-deploy.rsa
     - git submodule sync --recursive
-    - GIT_SSH_COMMAND='ssh -i .drawing-app-deploy.rsa -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no' git submodule update --init
+    - GIT_SSH_COMMAND='ssh -i .drawing-app-deploy.rsa -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no' git submodule update --init --depth 1
   artifacts:
     paths:
       - src/liowebrtc