diff --git a/Makefile b/Makefile
index a35e2fac11f..2f9c7bee4b9 100644
--- a/Makefile
+++ b/Makefile
@@ -114,4 +114,5 @@ endif
 .PHONY: clean
 clean:
 	rm -rf $(OUTPUT_DIRNAME) *~
+	rm -f code-of-conduct.md version.md