diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 167a8a46..6ce0a8f7 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: [ubuntu-latest]
+    runs-on: [ubuntu-latest, windows-latest, macos-latest]
     strategy:
       max-parallel: 4
       matrix:
@@ -23,9 +23,8 @@ jobs:
           poetry install
       - name: Typecheck with mypy
         run: |
-          pip install mypy==0.781
           make typecheck
       - name: Test with pytest
         run: |
           pip install .
-          pytest tests/ -v
+          python -m pytest tests/ -v
diff --git a/Makefile b/Makefile
index 9df9641c..ee72887c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 test:
-	pytest --cov-report term-missing --cov=rich tests/ -vv
+	python -m pytest --cov-report term-missing --cov=rich tests/ -vv
 typecheck:
-	mypy -p rich --ignore-missing-imports --warn-unreachable
+	python -m mypy -p rich --ignore-missing-imports --warn-unreachable
 typecheck-report:
 	mypy -p rich --ignore-missing-imports --warn-unreachable --html-report mypy_report
 .PHONY: docs