diff --git a/mix.exs b/mix.exs
index 71d4d1d..44ab697 100644
--- a/mix.exs
+++ b/mix.exs
@@ -23,7 +23,8 @@ defmodule JsonWebToken.Mixfile do
       applications: [
         :crypto,
         :logger,
-        :public_key
+        :public_key,
+        :poison
       ]
     ]
   end