diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d812760c9..8fafa7c27 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,6 +7,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
+    with:
+        submodules: true
     - name: make
       run: |
           sudo apt-get install uuid-dev libcurl4-openssl-dev
@@ -20,6 +22,8 @@ jobs:
     runs-on: ubuntu-16.04
     steps:
     - uses: actions/checkout@v1
+    with:
+        submodules: true
     - name: make
       run: | 
         sudo apt-get install uuid-dev libcurl4-openssl-dev
@@ -29,5 +33,7 @@ jobs:
     runs-on: macos-latest
     steps:
     - uses: actions/checkout@v1
+    with:
+        submodules: true
     - name: make
       run: make