diff --git a/lib/job-iteration/iteration.rb b/lib/job-iteration/iteration.rb
index 35cb2e92..567eec7f 100644
--- a/lib/job-iteration/iteration.rb
+++ b/lib/job-iteration/iteration.rb
@@ -238,7 +238,7 @@ def assert_valid_cursor!(cursor)
       Deprecation.warn(<<~DEPRECATION_MESSAGE, caller_locations(3))
         The Enumerator returned by #{self.class.name}#build_enumerator yielded a cursor which is unsafe to serialize.
 
-        TBD MENTION SERIALIZERS!
+        See https://github.com/Shopify/job-iteration/blob/main/guides/custom-enumerator.md#cursor-types
 
         This will raise starting in version #{Deprecation.deprecation_horizon} of #{Deprecation.gem_name}!"
       DEPRECATION_MESSAGE