diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a14e40f..55c9193 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -159,6 +159,7 @@ jobs:
     timeout-minutes: 5
     steps:
     - uses: actions/checkout@v1
+    - uses: seanmiddleditch/gha-setup-ninja@master
     - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with: