diff --git a/lib/deep_lex.ex b/lib/deep_lex.ex
index 55d3ecd..d06d857 100644
--- a/lib/deep_lex.ex
+++ b/lib/deep_lex.ex
@@ -8,8 +8,8 @@ defmodule DeepLex do
 
   @type response :: %{translations: [translation]}
 
-  plug Tesla.Middleware.EncodeFormUrlencoded
-  plug Tesla.Middleware.DecodeJson, engine_opts: [keys: :atoms!]
+  plug(Tesla.Middleware.EncodeFormUrlencoded)
+  plug(Tesla.Middleware.DecodeJson, engine_opts: [keys: :atoms!])
 
   defp base_url(:free) do
     "https://api-free.deepl.com/v2/"