diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cea0c606..cf267f32 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -75,6 +75,9 @@ jobs:
           cache: npm
           cache-dependency-path: ${{ env.working-directory }}/package-lock.json
 
+      - name: Typing (mypy)
+        run: sudo apt-get install build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev
+
       - name: Install dependencies
         run: npm ci