diff --git a/index.d.ts b/index.d.ts
index e927a4b..26a13a4 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -776,6 +776,7 @@ declare global {
         crypto: CryptoPackage
         json: JsonPackage
         exec: ExecPackage
+        base64: Base64Package
     }
 
     export interface HookException {