diff --git a/Makefile b/Makefile
index 8771526..79ddcd4 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ format:
 	@which gofumpt || (go install mvdan.cc/gofumpt@latest)
 	@gofumpt -l -w $(ROOT)
 	@which gci || (go install github.com/daixiang0/gci@latest)
-	@gci write $(ROOT)
+	@gci write $(ROOT) --skip-generated --skip-vendor
 	@which golangci-lint || (go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.54.0)
 	@golangci-lint run --fix