diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index eb40232e26..f97ea0407a 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -14,4 +14,5 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Run tests
+      run: apt-get install libpng-dev
       run: cd tests; python ./build.py