diff --git a/third_party/aiter b/third_party/aiter
index 428e8e761c7..859e56f98b2 160000
--- a/third_party/aiter
+++ b/third_party/aiter
@@ -1 +1 @@
-Subproject commit 428e8e761c7bc22d03513bcb8507375afef1f916
+Subproject commit 859e56f98b2928fb8588c1f207e91df10d955518