diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index a48ca2f9..b14484e8 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -16,6 +16,8 @@ jobs:
     steps:
       - name: Check out the repo
         uses: actions/checkout@v2
+        with:
+          submodules: true
 
       - name: Log in to Docker Hub
         uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9