diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b4cafee..d3fd51f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -51,8 +51,10 @@ jobs:
       - name: Install tests’ requirements
         run: python -m pip install .[test]
       - name: Launch tests
-        run: python -m pytest
+        run: |
+          python cairocffi/ffi_build.py
+          python -m pytest
       - name: Check coding style
         run: python -m flake8
       - name: Check imports order
-        run: python -m isort . --check --diff
\ No newline at end of file
+        run: python -m isort . --check --diff