diff --git a/.changeset/dirty-games-jam.md b/.changeset/dirty-games-jam.md
new file mode 100644
index 000000000000..50ea10998a02
--- /dev/null
+++ b/.changeset/dirty-games-jam.md
@@ -0,0 +1,6 @@
+---
+"astro": patch
+"@astrojs/db": patch
+---
+
+Fixes @astrojs/db loading TS in the fixtures
diff --git a/packages/astro/src/core/config/vite-load.ts b/packages/astro/src/core/config/vite-load.ts
index 0df11bfd0375..c890bb48d6df 100644
--- a/packages/astro/src/core/config/vite-load.ts
+++ b/packages/astro/src/core/config/vite-load.ts
@@ -21,6 +21,7 @@ async function createViteServer(root: string, fs: typeof fsType): Promise<ViteDe
 				'@astrojs/preact',
 				'@astrojs/sitemap',
 				'@astrojs/markdoc',
+				'@astrojs/db',
 			],
 		},
 		plugins: [loadFallbackPlugin({ fs, root: pathToFileURL(root) })],
diff --git a/packages/db/src/core/load-file.ts b/packages/db/src/core/load-file.ts
index cc1b23c014b2..f31749c187f0 100644
--- a/packages/db/src/core/load-file.ts
+++ b/packages/db/src/core/load-file.ts
@@ -106,7 +106,7 @@ export async function importBundledFile({
 	const tmpFileUrl = new URL(`./db.timestamp-${Date.now()}.mjs`, root);
 	await writeFile(tmpFileUrl, code, { encoding: 'utf8' });
 	try {
-		return await import(/* @vite-ignore */ tmpFileUrl.pathname);
+		return await import(/* @vite-ignore */ tmpFileUrl.toString());
 	} finally {
 		try {
 			await unlink(tmpFileUrl);
diff --git a/packages/db/test/fixtures/basics/astro.config.mjs b/packages/db/test/fixtures/basics/astro.config.ts
similarity index 100%
rename from packages/db/test/fixtures/basics/astro.config.mjs
rename to packages/db/test/fixtures/basics/astro.config.ts