diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 54c3be5..637bc1a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -63,6 +63,9 @@ jobs:
         with:
           enable-cache: true
 
+      - name: Install pngquant
+        run: sudo apt-get update && sudo apt-get install -y pngquant
+
       - name: Sync environment
         run: uv sync --all-extras --dev