diff --git a/lib/Authority.ts b/lib/Authority.ts
index 4e50987..c2d005a 100644
--- a/lib/Authority.ts
+++ b/lib/Authority.ts
@@ -51,7 +51,7 @@ class Authority {
     };
     const data = await verify_signature_get_info (
       key,
-      (info) => {
+      async (info) => {
         try {
           return await keystore.get_key (info.iat / 1000, info.iss);
         }