diff --git a/.gitignore b/.gitignore
index 7329a85..c3fe150 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 # build output
 dist/
 .output/
+.astro
 
 # dependencies
 node_modules/
diff --git a/astro.config.mjs b/astro.config.mjs
index 785b966..31d7fe6 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -1,10 +1,9 @@
-import { defineConfig } from "astro/config";
 import tailwind from "@astrojs/tailwind";
 import image from "@astrojs/image";
 import mdx from "@astrojs/mdx";
 import sitemap from "@astrojs/sitemap";
 
-export default defineConfig({
+export default {
   site: "https://astroship.web3templates.com",
   integrations: [
     tailwind(),
@@ -14,4 +13,4 @@ export default defineConfig({
     mdx(),
     sitemap(),
   ],
-});
+};
diff --git a/src/env.d.ts b/src/env.d.ts
index f964fe0..22be149 100644
--- a/src/env.d.ts
+++ b/src/env.d.ts
@@ -1 +1,2 @@
-/// <reference types="astro/client" />
+/// <reference path="../.astro/types.d.ts" />
+/// <reference types="@astrojs/image/client" />
diff --git a/tsconfig.json b/tsconfig.json
index ed6fd0b..ab9a523 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,7 @@
 {
   "extends": "astro/tsconfigs/base",
   "compilerOptions": {
+    "strictNullChecks": true,
     "baseUrl": "src",
     "paths": {
       "@lib/*": [