diff --git a/apps/emqx_release_helper/lib/emqx_release_helper/dsl.ex b/apps/emqx_release_helper/lib/emqx_release_helper/dsl.ex
deleted file mode 100644
index ff280f6e3..000000000
--- a/apps/emqx_release_helper/lib/emqx_release_helper/dsl.ex
+++ /dev/null
@@ -1,20 +0,0 @@
-defmodule EmqxReleaseHelper.DSL do
-  defmacro __using__(_) do
-    quote do
-      import unquote(__MODULE__)
-      Module.register_attribute(__MODULE__, :applications, accumulate: true)
-      import EmqxReleaseHelper.DSL.Application
-      # @before_compile unquote(__MODULE__)
-    end
-  end
-
-  defmacro overlay(_) do
-  end
-
-  defmacro overlay(_, _) do
-  end
-
-  # defmacro __before_compile__(%Macro.Env{}=env) do
-  #   EmqxReleaseHelper.DSL.Application.__before_compile__(env)
-  # end
-end