diff --git a/Makefile b/Makefile
index d29527f41..03b4d8263 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,7 @@ build_frontend:
 build:
 	make install_frontend
 	make build_frontend
-	poetry build
+	poetry build --format sdist
 
 help:
 	@echo '----'