diff --git a/packages/astro/internal/keystatic-astro-page.astro b/packages/astro/internal/keystatic-astro-page.astro
index 75945d14d..545b6ee35 100644
--- a/packages/astro/internal/keystatic-astro-page.astro
+++ b/packages/astro/internal/keystatic-astro-page.astro
@@ -1,5 +1,5 @@
 ---
-import { Keystatic } from './keystatic-page.js';
+import { Keystatic } from './keystatic-page.tsx';
 
 export const prerender = false;
 ---
diff --git a/packages/astro/internal/keystatic-page.js b/packages/astro/internal/keystatic-page.tsx
similarity index 100%
rename from packages/astro/internal/keystatic-page.js
rename to packages/astro/internal/keystatic-page.tsx
diff --git a/packages/astro/package.json b/packages/astro/package.json
index 115437ec5..fa56988c8 100644
--- a/packages/astro/package.json
+++ b/packages/astro/package.json
@@ -43,7 +43,7 @@
   },
   "peerDependencies": {
     "@keystatic/core": "*",
-    "astro": "2 || 3 || 4 || 5",
+    "astro": "2 || 3 || 4 || 5 || 6",
     "react": "^18.2.0 || ^19.0.0",
     "react-dom": "^18.2.0 || ^19.0.0"
   },