diff --git a/requirements-dev.txt b/requirements-dev.txt
index 680b465a3f..45537419e0 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -33,3 +33,4 @@ notebook
 nbconvert
 sphinx-autodoc-typehints
 
+anyio>=4.4.0 # not directly required, pinned by Snyk to avoid a vulnerability