diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d6cebb7cfd8..8eab547d70c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -119,6 +119,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+        with:
+          submodules: recursive
 
       - name: Set up JDK 11.0.8
         uses: actions/setup-java@v1