diff --git a/Makefile b/Makefile
index 095e237..65e920e 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,7 @@ build: clean requirements.txt
 	python3 -m pip install -r requirements.txt --target build
 	cp -r mail4one/ build/
 	python3 -m compileall build/mail4one -f
+	rm -rf build/*.dist-info
 	python3 -m zipapp \
 		--output mail4one.pyz \
 		--python "/usr/bin/env python3" \