diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index 0e039d71..5360794c 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -7,6 +7,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
+      with: 
+        submodules: recursive
     - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with: