diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5845b9d8d7..d2fba23d85 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -136,3 +136,7 @@ jobs:
           cd ../ifcpatch && make test
           pip install -e ../ifctester --no-deps
           cd ../ifctester && make test
+          # Run mathutils related tests at the end to ensure no other code is relying on mathutils.
+          cd ../ifcopenshell-python
+          pip install mathutils
+          make test-mathutils
diff --git a/src/ifcopenshell-python/Makefile b/src/ifcopenshell-python/Makefile
index 883f3a6cde..776083d04c 100644
--- a/src/ifcopenshell-python/Makefile
+++ b/src/ifcopenshell-python/Makefile
@@ -60,7 +60,11 @@ IFCCONVERT_URL:=https://s3.amazonaws.com/ifcopenshell-builds/IfcConvert-v0.8.3-e
 
 .PHONY: test
 test:
-	pytest -p no:pytest-blender test
+	pytest -p no:pytest-blender test --ignore=test/util/test_shape_builder.py
+
+.PHONY: test-mathutils
+test-mathutils:
+	pytest -p no:pytest-blender test/util/test_shape_builder.py
 
 .PHONY: build-ids-docs
 build-ids-docs: