diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 90b5221a..497df10f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -473,6 +473,8 @@ jobs:
         run: |
           echo "before anything..."
           "$PYTHON" -m pip list
+          # TEMPORARY manual httplib2 to test significant breaking changes 
+          "$PYTHON" -m pip install --upgrade https://github.com/httplib2/httplib2/archive/refs/heads/master.zip
           "$PYTHON" -m pip install --upgrade ..[yubikey]
           "$PYTHON" -m pip list
           #"$PYTHON" -m pip install --force-reinstall --no-deps --upgrade cryptography