diff --git a/src/requirements.txt b/src/requirements.txt
index 278496d0..d50079fd 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -1,6 +1,7 @@
 Flask==2.1.3
 globus_sdk==2.0.1
 hubmap-sdk==1.0.4
+Werkzeug==2.1.0
 
 # The commons package requires requests>=2.22.0
 requests==2.25.1