diff --git a/.changeset/dirty-zoos-enjoy.md b/.changeset/dirty-zoos-enjoy.md
new file mode 100644
index 0000000000000..de9ae537fa12d
--- /dev/null
+++ b/.changeset/dirty-zoos-enjoy.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Don’t require `getCollection()` filter to be a type guard
diff --git a/packages/astro/src/content/template/types.d.ts b/packages/astro/src/content/template/types.d.ts
index 628f5d18df120..7dbe478ce3242 100644
--- a/packages/astro/src/content/template/types.d.ts
+++ b/packages/astro/src/content/template/types.d.ts
@@ -48,6 +48,10 @@ declare module 'astro:content' {
 		collection: C,
 		filter?: (entry: CollectionEntry<C>) => entry is E
 	): Promise<E[]>;
+	export function getCollection<C extends keyof typeof entryMap>(
+		collection: C,
+		filter?: (data: CollectionEntry<C>) => unknown
+	): Promise<CollectionEntry<C>[]>;
 
 	type InferEntrySchema<C extends keyof typeof entryMap> = import('astro/zod').infer<
 		Required<ContentConfig['collections'][C]>['schema']