diff --git a/action.js b/action.js
index e891553..184dd93 100644
--- a/action.js
+++ b/action.js
@@ -3,7 +3,7 @@ import { readFileSync, mkdirSync, writeFileSync, readdirSync } from "fs";
 
 const libName = process.env.PWD.split("/").slice(-1)[0];
 const version = readFileSync("version", { encoding: "utf8" });
-const tarName = `${libName}_${version}.tgz`;
+const tarName = `${libName}-${version}.tgz`;
 const repoBaseUrl = `${process.env.INPUT_REPO_URL}/${libName}/${version}`;
 const packageJsonUrls = [];
 
@@ -54,7 +54,7 @@ writeFileSync(
 );
 
 // create tar file
-execSync(`tar czf ${tarName} ${libName}`, {
+execSync(`tar cf ${tarName} ${libName}`, {
   encoding: "utf8",
 });