diff --git a/circleci/images/citusupgradetester/files/etc/requirements.txt b/circleci/images/citusupgradetester/files/etc/requirements.txt
index 15074b7..8e861ab 100644
--- a/circleci/images/citusupgradetester/files/etc/requirements.txt
+++ b/circleci/images/citusupgradetester/files/etc/requirements.txt
@@ -19,7 +19,7 @@ cryptography==46.0.5; python_version >= '3.8' and python_full_version not in '3.
 docopt==0.6.2
 execnet==2.1.2; python_version >= '3.8'
 filelock==3.25.0; python_version >= '3.10'
-flask==3.1.2; python_version >= '3.9'
+flask==3.1.3; python_version >= '3.9'
 h11==0.16.0; python_version >= '3.8'
 h2==4.3.0; python_version >= '3.9'
 hpack==4.1.0; python_version >= '3.9'