diff --git a/requirements-dev.txt b/requirements-dev.txt
index 426f4b2..6e41c93 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -26,3 +26,4 @@ tornado >= 6.2
 werkzeug >= 2.2.3
 wheel >= 0.42
 requests>=2.32.0 # not directly required, pinned by Snyk to avoid a vulnerability
+anyio>=4.4.0 # not directly required, pinned by Snyk to avoid a vulnerability