diff --git a/src/swcx/index.ts b/src/swcx/index.ts
index 1fe6765..9628379 100644
--- a/src/swcx/index.ts
+++ b/src/swcx/index.ts
@@ -48,7 +48,7 @@ const getCoreVersion = () => {
           devDependencies,
         } = require(cwdPackageManifestPath);
         const swcCoreVersion =
-          dependencies["@swc/core"] || devDependencies["@swc/core"];
+          dependencies?.["@swc/core"] || devDependencies?.["@swc/core"];
         if (swcCoreVersion) {
           return minVersion(swcCoreVersion);
         }