diff --git a/requirements.txt b/requirements.txt
index dbb7d5c..ce1b684 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ pytest-split>=0.9.0          # shard the suite across CI runners
 pytest-html>=4.1.1           # self-contained HTML report
 pytest-rerunfailures>=14.0   # controlled retries, see docs/06-flaky-tests.md
 pytest-base-url>=2.1.0
-Flask>=3.0.0                 # the bundled app under test
+Flask>=3.1.3                 # the bundled app under test
 Faker>=40.36.0                # test data factory
 python-dotenv>=1.0.0
 requests>=2.31.0