diff --git a/.changeset/unlucky-cougars-heal.md b/.changeset/unlucky-cougars-heal.md
new file mode 100644
index 000000000000..a6579499e917
--- /dev/null
+++ b/.changeset/unlucky-cougars-heal.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Make typing of `defineCollection` more permissive to support advanced union and intersection types
diff --git a/packages/astro/content-types.template.d.ts b/packages/astro/content-types.template.d.ts
index edc50fcc9ff3..3f9529012651 100644
--- a/packages/astro/content-types.template.d.ts
+++ b/packages/astro/content-types.template.d.ts
@@ -53,12 +53,9 @@ declare module 'astro:content' {
 
 	type BaseSchemaWithoutEffects =
 		| import('astro/zod').AnyZodObject
-		| import('astro/zod').ZodUnion<import('astro/zod').AnyZodObject[]>
+		| import('astro/zod').ZodUnion<[BaseSchemaWithoutEffects, ...BaseSchemaWithoutEffects[]]>
 		| import('astro/zod').ZodDiscriminatedUnion<string, import('astro/zod').AnyZodObject[]>
-		| import('astro/zod').ZodIntersection<
-				import('astro/zod').AnyZodObject,
-				import('astro/zod').AnyZodObject
-		  >;
+		| import('astro/zod').ZodIntersection<BaseSchemaWithoutEffects, BaseSchemaWithoutEffects>;
 
 	type BaseSchema =
 		| BaseSchemaWithoutEffects