diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cd4cf47..6cbdfba 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,10 +21,10 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
-    - name: Install GTK dependencies
+    - name: Install system dependencies
       run: |
         sudo apt-get update
-        sudo apt-get install -y python3-gi python3-gi-cairo gir1.2-gtk-3.0
+        sudo apt-get install -y python3-gi python3-gi-cairo gir1.2-gtk-3.0 libgirepository1.0-dev gcc libcairo2-dev pkg-config python3-dev
 
     - name: Install Python dependencies
       run: |