diff --git a/rest_framework-stubs/utils/encoders.pyi b/rest_framework-stubs/utils/encoders.pyi
index 9d88a9b58..a6e2a87c5 100644
--- a/rest_framework-stubs/utils/encoders.pyi
+++ b/rest_framework-stubs/utils/encoders.pyi
@@ -1,3 +1,10 @@
+import datetime
 import json
 
+from yaml import Dumper, ScalarNode
+
 class JSONEncoder(json.JSONEncoder): ...
+
+class CustomScalar:
+    @classmethod
+    def represent_timedelta(cls, dumper: Dumper, data: datetime.timedelta) -> ScalarNode: ...
diff --git a/scripts/stubtest/allowlist_todo.txt b/scripts/stubtest/allowlist_todo.txt
index 5ce812434..4e4e6bfdd 100644
--- a/scripts/stubtest/allowlist_todo.txt
+++ b/scripts/stubtest/allowlist_todo.txt
@@ -147,5 +147,4 @@ rest_framework.serializers.Field.__class_getitem__
 rest_framework.serializers.ListSerializer.run_child_validation
 rest_framework.serializers.ModelSerializer.get_unique_together_constraints
 rest_framework.templatetags.rest_framework.optional_logout
-rest_framework.utils.encoders.CustomScalar
 rest_framework.utils.field_mapping.get_unique_validators