diff --git a/debian/rules b/debian/rules
index c4ae247..411849c 100755
--- a/debian/rules
+++ b/debian/rules
@@ -32,6 +32,7 @@ endif
 override_dh_clean:
 	dh_clean -O--buildsystem=python_distutils
 	rm -rf build
+	rm -rf pygit2/__pycache__
 
 override_dh_sphinxdoc:
 	sphinx-build -b html docs debian/python-pygit2-doc/usr/share/doc/python-pygit2-doc/html