diff --git a/requirements.txt b/requirements.txt
index 1cfc397..4583961 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,3 +3,4 @@ flask~=0.12.0
 
 # APIs
 recastai~=3.0.0
+werkzeug>=2.2.3 # not directly required, pinned by Snyk to avoid a vulnerability