diff --git a/requirements.txt b/requirements.txt
index 207fe64d..567dc33d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,3 +4,4 @@ email-validator==2.2.0
 makejinja==2.6.1
 netaddr==1.3.0
 passlib==1.7.4
+anyio>=4.4.0 # not directly required, pinned by Snyk to avoid a vulnerability