diff --git a/tools/get-release-tag.mjs b/tools/get-release-tag.mjs
index 3718a2f..7d6f958 100644
--- a/tools/get-release-tag.mjs
+++ b/tools/get-release-tag.mjs
@@ -2,4 +2,4 @@
 import packageJson from "../package.json" with { type: "json" };
 
 const matched = /-(beta|rc)\d+$/.exec(packageJson.version);
-console.log(matched[1] ?? "latest");
+console.log(matched?.[1] ?? "latest");