diff --git a/packages/core-internal/src/types/spec.types.2026-07-28.ts b/packages/core-internal/src/types/spec.types.2026-07-28.ts
index a8ec4f807..f07ef22d1 100644
--- a/packages/core-internal/src/types/spec.types.2026-07-28.ts
+++ b/packages/core-internal/src/types/spec.types.2026-07-28.ts
@@ -3,7 +3,7 @@
  *
  * Source: https://github.com/modelcontextprotocol/modelcontextprotocol
  * Pulled from: https://raw.githubusercontent.com/modelcontextprotocol/modelcontextprotocol/main/schema/draft/schema.ts
- * Last updated from commit: f68d864a813754e188c6df52dcc5772a12f96c63
+ * Last updated from commit: 2ffc3fa2d00e637ae7c3d1438aaa0561ddfda184
  *
  * DO NOT EDIT THIS FILE MANUALLY. Changes will be overwritten by automated updates.
  * To update this file, run: pnpm run fetch:spec-types 2026-07-28