diff --git a/.github/workflows/testing.yaml b/.github/workflows/testing.yaml
index ccbadd6..9ca7753 100644
--- a/.github/workflows/testing.yaml
+++ b/.github/workflows/testing.yaml
@@ -46,7 +46,9 @@ jobs:
         run: echo "export POSTGRES_URL=postgresql://postgres@postgres:5432/postgres" > build/test-environment
 
       - name: Install UUID extension
-        run: psql -q -h postgres -U postgres -d postgres -c 'CREATE EXTENSION "uuid-ossp";'
+        run: |
+          apt-get install -y postgresql-client \
+          && psql -q -h postgres -U postgres -d postgres -c 'CREATE EXTENSION "uuid-ossp";'
 
       - name: Run flake8 tests
         run: flake8