diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index d4c09d73..823f899f 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -14,5 +14,5 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - run: sudo apt update
-      - run: sudo apt install inkscape -y
+      - run: sudo apt install inkscape optipng -y
       - run: make
\ No newline at end of file