diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8e4c2b6ac15..7583ed8011e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -65,7 +65,7 @@ jobs:
         if: env.BUILD_TYPE != 'LINT'
         run: |
           sudo apt-get update
-          sudo apt-get -yqq install postgresql-client libpq-dev jpegoptim optipng jhead
+          sudo apt-get -yqq install postgresql-client libpq-dev jpegoptim optipng jhead pngcrush pngquant
           wget -qO- https://raw.githubusercontent.com/discourse/discourse_docker/master/image/base/install-pngquant | sudo sh
 
       - name: Update imagemagick