diff --git a/libs/core/.github/workflows/ci.yml b/libs/core/.github/workflows/ci.yml
index 405edd03..be9929b4 100644
--- a/libs/core/.github/workflows/ci.yml
+++ b/libs/core/.github/workflows/ci.yml
@@ -8,6 +8,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          submodules: 'true'
       - name: Setup Zig
         run: |
           sudo apt install xz-utils
@@ -33,6 +35,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          submodules: 'true'
       - name: Setup Zig
         run: |
           $ProgressPreference = 'SilentlyContinue'
@@ -56,6 +60,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          submodules: 'true'
       - name: Setup Zig
         run: |
           brew install xz
diff --git a/libs/gpu/.github/workflows/ci.yml b/libs/gpu/.github/workflows/ci.yml
index bb95a3fc..3f56f2a4 100644
--- a/libs/gpu/.github/workflows/ci.yml
+++ b/libs/gpu/.github/workflows/ci.yml
@@ -8,6 +8,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          submodules: 'true'
       - name: Setup Zig
         run: |
           sudo apt install xz-utils
@@ -26,6 +28,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          submodules: 'true'
       - name: Setup Zig
         run: |
           $ProgressPreference = 'SilentlyContinue'
@@ -47,6 +51,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          submodules: 'true'
       - name: Setup Zig
         run: |
           brew install xz