diff --git a/tests/requirements.testing.txt b/tests/requirements.testing.txt
index 7517bd8..6f2f03c 100644
--- a/tests/requirements.testing.txt
+++ b/tests/requirements.testing.txt
@@ -12,4 +12,5 @@ pytest>=6.2.5
 pytest-asyncio>=0.16.0
 anyio>=3.3.1
 black>=21.12b0
-isort>=5.10.1
\ No newline at end of file
+isort>=5.10.1
+werkzeug>=3.0.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file