diff --git a/packages/bigframes/testing/constraints-3.11.txt b/packages/bigframes/testing/constraints-3.11.txt
index 7bb201d16fcd..79433e287352 100644
--- a/packages/bigframes/testing/constraints-3.11.txt
+++ b/packages/bigframes/testing/constraints-3.11.txt
@@ -565,7 +565,7 @@ torchao==0.10.0
 torchdata==0.11.0
 torchsummary==1.5.1
 torchtune==0.6.1
-tornado==6.4.2
+tornado==6.5.6
 tqdm==4.67.1
 traitlets==5.7.1
 traittypes==0.2.1