diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3bff4f78..44ca002c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,6 +19,8 @@ build:
     GIT_SUBMODULE_STRATEGY: recursive
 
   before_script:
+    - git submodule sync --recursive
+    - git submodule update --init --recursive
     - curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python
 
   script: