diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 69e18523..bf2d818a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -81,6 +81,7 @@ jobs:
 
       - run: pipx run build --sdist
 
+      - run: python -m pip install --upgrade pip setuptools
       - run: python -m pip install -v $(echo dist/iminuit-*)[test]
       - run: python -m pytest