diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 14300f3bf..e596aa0ec 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,6 +6,7 @@ variables: &global_variables
   POSTGRES_PASSWORD: postgres
   DB_HOST: postgres
   MIX_ENV: test
+  SHELL: /bin/sh
   USER: root
 
 cache: &global_cache_policy