diff --git a/src/index.ts b/src/index.ts
index f07c313..0587c4c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -11,7 +11,7 @@ const createPlugin = (): Plugin => {
         const val = JSON.stringify(process.env.npm_package_version);
 
         const key2 = 'import.meta.env.BUILD_DATAE';
-        const val2 = JSON.stringify(process.env.npm_build_date);
+        const val2 = JSON.stringify(new Date());
 
         return { define: { [key]: val, [key2]: val2 } };
       } else {