diff --git a/requirements.txt b/requirements.txt
index e5569d1f3..a61de5664 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,3 +10,4 @@ requests
 structlog
 tqdm
 ujson
+anyio>=4.4.0 # not directly required, pinned by Snyk to avoid a vulnerability