diff --git a/server.ts b/server.ts
index ab310e3..23db600 100755
--- a/server.ts
+++ b/server.ts
@@ -18,7 +18,7 @@ export async function processRequest(
   const file = params.length > 2 ? params.slice(2).join("/") : "all";
   const path =
     `https://code.thunderk.net/typescript/${lib}/raw/${version}/${file}.ts`;
-  if (!path.match(/^[a-z0-9\/\.\:-_]+$/)) {
+  if (!path.match(/^[a-z0-9\/\.\-:_]+$/)) {
     return {
       status: 400,
       body: `console.error("bundler error - Invalid path ${path}");`,