diff --git a/lib/nitroux/plug.ex b/lib/nitroux/plug.ex
index 858491c..3189344 100644
--- a/lib/nitroux/plug.ex
+++ b/lib/nitroux/plug.ex
@@ -12,7 +12,8 @@ defmodule Nitroux.Plug do
         _ -> data
       end
 
-    %{conn | resp_headers: [{"content-type", "text/html"}]}
+    conn
+    |> put_resp_header("content-type", "text/html")
     |> resp(conn.status || 200, data)
   end
 end
diff --git a/mix.exs b/mix.exs
index 24457c6..346353b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,7 +4,7 @@ defmodule Nitroux.MixProject do
   def project do
     [
       app: :nitroux,
-      version: "0.4.3",
+      version: "0.4.4",
       elixir: "~> 1.13",
       name: "nitroux",
       description: description(),