diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 565cf19bab..ada6618bc6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -57,6 +57,8 @@ jobs:
           
       - name: ccache
         uses: hendrikmuhs/ccache-action@v1
+        with:
+          key: ${GITHUB_WORKFLOW}
 
       - name: Build ifcopenshell
         run: |
@@ -73,7 +75,7 @@ jobs:
                -DPYTHON_INCLUDE_DIR:PATH=/usr/include/python3.8 \
                -DPYTHON_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libpython3.8.so \
                -DCOLLADA_SUPPORT=Off \
-               "-DSCHEMA_VERSIONS=2x3;4;4x3" \
+               "-DSCHEMA_VERSIONS=2x3;4;4x3_add1" \
                -DGLTF_SUPPORT=On \
                -DJSON_INCLUDE_DIR=/usr/include \
                -DCGAL_INCLUDE_DIR=/usr/include \
@@ -103,8 +105,8 @@ jobs:
       - name: Install Python dependencies
         run: |
           sudo /usr/bin/python -m pip install -U pip
-          sudo /usr/bin/python -m pip install xmlschema numpy lxml
-          sudo /usr/bin/python -m pip install src/bcf
+          sudo /usr/bin/python -m pip install xmlschema xsdata numpy lxml
+          sudo /usr/bin/python -m pip install src/bcf --no-deps
           sudo /usr/bin/python -m pip install pytest
           sudo /usr/bin/python -m pip install isodate
           sudo /usr/bin/python -m pip install lark