diff --git a/.github/workflows/default-tests.yml b/.github/workflows/default-tests.yml
index a68f2f28..4c454fe1 100644
--- a/.github/workflows/default-tests.yml
+++ b/.github/workflows/default-tests.yml
@@ -33,6 +33,7 @@ jobs:
     - name: Install compliance-checker
       run: |
         python -m pip install -e . --no-deps --force-reinstall
+        SETUPTOOLS_SCM_PRETEND_VERSION=1.0.0.dev0 pip install https://github.com/pelson/pyudunits2/archive/f75f1afd27d4b66ef77fc9db9301ae914111d288.zip
 
     - name: Default Tests
       run: python -m pytest -s -rxs -v -k "not integration" compliance_checker