diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e1dc3de..040446d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,6 +13,8 @@ build:
   rules:
     - if: '$CI_COMMIT_REF_NAME == "v4"'
   before_script:
+    - git submodule sync --recursive
+    - git submodule update --init --recursive
     - hash -r
     - npm ci --cache .npm --prefer-offline
   script: