diff --git a/plugins/ui/src/deephaven/ui/_internal/utils.py b/plugins/ui/src/deephaven/ui/_internal/utils.py
index e16de09bd..4937a0ea5 100644
--- a/plugins/ui/src/deephaven/ui/_internal/utils.py
+++ b/plugins/ui/src/deephaven/ui/_internal/utils.py
@@ -15,7 +15,6 @@
     JavaTime,
     LocalDateConvertible,
     LocalDate,
-    UndefinedType,
     Undefined,
 )
 
diff --git a/plugins/ui/src/deephaven/ui/types/types.py b/plugins/ui/src/deephaven/ui/types/types.py
index 733444e99..6e944d8de 100644
--- a/plugins/ui/src/deephaven/ui/types/types.py
+++ b/plugins/ui/src/deephaven/ui/types/types.py
@@ -9,13 +9,12 @@
     Tuple,
     Callable,
     Sequence,
-    TypeAlias,
 )
 
 if sys.version_info < (3, 11):
-    from typing_extensions import TypedDict, NotRequired
+    from typing_extensions import TypedDict, NotRequired, TypeAlias
 else:
-    from typing import TypedDict, NotRequired
+    from typing import TypedDict, NotRequired, TypeAlias
 
 import datetime
 import pandas