diff --git a/packages/schema/src/version/update.ts b/packages/schema/src/version/update.ts
index 755f41e..05652fe 100644
--- a/packages/schema/src/version/update.ts
+++ b/packages/schema/src/version/update.ts
@@ -9,7 +9,7 @@ export const VersionUpdateInput = z
       .enum(['draft', 'review', 'published'])
       .default('draft')
       .optional(),
-    releasedAt: z.date().or(z.string()).optional(),
+    releasedAt: z.date().or(z.string()).optional().nullable(),
   })
   .openapi({})
 export const VersionUpdateParams = z