diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 88b4524..f0f2c94 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,6 +2,7 @@ image: docker:latest
 
 variables:
   GIT_STRATEGY: fetch
+  GIT_SUBMODULE_STRATEGY: recursive
   PACKER_VERSION: 1.2.0
   ANNOUNCE: http://labsync.lab.fablab-nea.de:6969/announce
   WEBSEED: http://labsync.lab.fablab-nea.de/labsync/$CI_COMMIT_REF_NAME/$CI_PIPELINE_ID/images