diff --git a/rebar.config b/rebar.config
index 9fece7b2..2ae021a6 100644
--- a/rebar.config
+++ b/rebar.config
@@ -91,7 +91,9 @@
     ]},
     {main, "README.md"},
     {source_url, "https://github.com/benoitc/hackney"},
-    {source_ref, <<"master">>}
+    %% Historical release notes reference functions that have since been
+    %% removed; suppress those auto-link warnings.
+    {skip_undefined_reference_warnings_on, ["NEWS.md", "guides/MIGRATION.md"]}
 ]}.
 
 %% == Dialyzer ==