diff --git a/lib/json_web_token/hmac_token.rb b/lib/json_web_token/hmac_token.rb
index ceb1b9c913f..ec0917ab49d 100644
--- a/lib/json_web_token/hmac_token.rb
+++ b/lib/json_web_token/hmac_token.rb
@@ -18,7 +18,7 @@ module JSONWebToken
     end
 
     def encoded
-      JWT.encode(payload, secret, JWT_ALGORITHM)
+      JWT.encode(payload, secret, JWT_ALGORITHM, { typ: 'JWT' })
     end
 
     private