diff --git a/src/index.ts b/src/index.ts
index 1fbad19..1d39910 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -27,4 +27,4 @@ export {
 	type PromptDefenseOptions,
 } from "./core/prompt-defense";
 // Types
-export type { RiskLevel, Tier1Result } from "./types";
+export type { RiskLevel, Tier1Result, ToolSanitizationRule } from "./types";