diff --git a/dist/index.js b/dist/index.js
index 0e86efa..cf048f7 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -12873,7 +12873,7 @@ const { owner, repo } = Github.context.repo;
 async function run() {
     try {
         // Validate envs and inputs
-        if (/^([\w-]+)$/.test(versionPrefix) === false) {
+        if (versionPrefix !== "" && /^([\w-]+)$/.test(versionPrefix) === false) {
             core.setFailed('Invalid version prefix.');
             return;
         }
diff --git a/index.ts b/index.ts
index 1d28d0e..4294f04 100755
--- a/index.ts
+++ b/index.ts
@@ -40,7 +40,7 @@ const {owner, repo} = Github.context.repo
 async function run() {
     try {
         // Validate envs and inputs
-        if(/^([\w-]+)$/.test(versionPrefix) === false) {
+        if(versionPrefix !== "" && /^([\w-]+)$/.test(versionPrefix) === false) {
             core.setFailed('Invalid version prefix.');
             return
         }