diff --git a/src/index.ts b/src/index.ts
index a3efc83..6d5066b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -143,7 +143,7 @@ app.get("/changelog", (_req, res) => res.redirect(301, "/changelog.html"));
 
 // Blog routes
 app.get("/blog", (_req, res) => res.redirect(301, "/blog.html"));
-app.get("/blog/:slug([^.]+)", (req, res) => res.redirect(301, `/blog/${req.params.slug}.html`));
+app.get("/blog/:slug([^.]+)", (req, res) => res.redirect(301, `/blog/${(req.params as any).slug}.html`));
 
 // Static files (landing page)
 app.use(express.static(path.join(__dirname, "../public"), { etag: true }));