diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 067e750bdb9d3179f4de1ca2b1157359a56343de..99e5ae623e367d6efc50602c1b6a92031eb51f60 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,7 +6,7 @@ tests:
     stage: tests
 
     script:
-        - git submodules update --init --recursive
+        - git submodule update --init --recursive
         - python3 -m pip install -r submodules/dagflow/requirements.txt
         - mkdir output
         - coverage run --source=. --omit=submodules/* -m pytest