diff --git a/rebar.config b/rebar.config
index 6f41233..f26e1de 100644
--- a/rebar.config
+++ b/rebar.config
@@ -15,6 +15,8 @@
             {platform_define, "^2", unicode_str}
 ]}.
 
+{edoc_opts, [preprocess]}.
+
 {dialyzer,
  [
   {warnings, [no_return, no_undefined_callbacks, no_unused]},