diff --git a/README.md b/README.md
index 2c652c5..09cfd01 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ Du benötigst **Lua 5.2+**, eine aktive **Redis-Instanz** und die folgenden **Lu
 * luasocket
 * luasec
 * multipart-post
-* dkjson
+* lua-cjson
 * lpeg
 * redis-lua
 * fakeredis
diff --git a/otouto/plugins/echo.lua b/otouto/plugins/echo.lua
index 3d9b154..55e9666 100644
--- a/otouto/plugins/echo.lua
+++ b/otouto/plugins/echo.lua
@@ -13,7 +13,7 @@ function echo:init(config)
 end
 
 function echo:inline_callback(inline_query, config, matches)
-  local text = matches[1]  
+  local text = matches[1]
   local results = '['
 
   -- enable custom markdown button
diff --git a/otouto/plugins/surrogate.lua b/otouto/plugins/surrogate.lua
index 2b52d94..8da3ae7 100644
--- a/otouto/plugins/surrogate.lua
+++ b/otouto/plugins/surrogate.lua
@@ -2,11 +2,11 @@ local surrogate = {}
 
 surrogate.triggers = {
   "^/s (%-%d+) +(.+)$",
-  "^/s (%d+) +(.+)$"
+  "^/s (%d+) +(.+)$",
+  "^/s (@[A-Za-z0-9-_-.-._.]+) +(.+)"
 }
 
 function surrogate:action(msg)
-  -- Supergroups don't work!?
   utilities.send_message(self, matches[1], matches[2], true, nil, true)
   return
 end
diff --git a/otouto/utilities.lua b/otouto/utilities.lua
index a18c930..1194b0d 100644
--- a/otouto/utilities.lua
+++ b/otouto/utilities.lua
@@ -8,7 +8,7 @@ http = require('socket.http')
 https = require('ssl.https')
 socket = require('socket')
 URL = require('socket.url')
-json = require('dkjson')
+json = require "cjson"
 serpent = require("serpent")
 bindings = require('otouto.bindings')
 redis = (loadfile "./otouto/redis.lua")()