diff --git a/.changeset/seven-crabs-burn.md b/.changeset/seven-crabs-burn.md
new file mode 100644
index 0000000000..e1badd5dd0
--- /dev/null
+++ b/.changeset/seven-crabs-burn.md
@@ -0,0 +1,5 @@
+---
+"astro": patch
+---
+
+Add type declarations for `import.meta.env.ASSETS_PREFIX` when defined as an object for handling different file types.
diff --git a/packages/astro/client.d.ts b/packages/astro/client.d.ts
index f81d652e38..3083247cfc 100644
--- a/packages/astro/client.d.ts
+++ b/packages/astro/client.d.ts
@@ -12,7 +12,7 @@ interface ImportMetaEnv {
 	/**
 	 * The prefix for Astro-generated asset links if the build.assetsPrefix config option is set. This can be used to create asset links not handled by Astro.
 	 */
-	readonly ASSETS_PREFIX: string;
+	readonly ASSETS_PREFIX: string | Record<string, string>;
 	/**
 	 * This is set to the site option specified in your project’s Astro config file.
 	 */