diff --git a/Makefile b/Makefile
index 3483f26..5cff791 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ test: unit
 publish: lint test upload clean
 
 clean:
-	rm -rf *.egg-info .pytest_cache .ipynb_checkpoints ./**/**/__pycache__ build dist
+	rm -rf *.egg-info .pytest_cache .ipynb_checkpoints ./**/__pycache__ ./**/**/__pycache__ build dist
 
 lint:
 	@echo Linting source code using pep8...