diff --git a/.gitea/workflows/tests.yml b/.gitea/workflows/tests.yml
index bde5f03..d661ebf 100644
--- a/.gitea/workflows/tests.yml
+++ b/.gitea/workflows/tests.yml
@@ -70,6 +70,9 @@ jobs:
           apt-get update
           apt-get install -y --no-install-recommends python3 python3-venv
           python3 -m venv /opt/venv
+          # bookworm's pip 23.0 rejects the PyTorch index's typing_extensions
+          # wheel over its name's spelling, then cannot build it from source
+          /opt/venv/bin/pip install --retries 5 --upgrade pip
           echo /opt/venv/bin >> "$GITHUB_PATH"
 
       # The CPU build first: torch from PyPI is the CUDA build, several GB of