diff --git a/Server/bkr/server/app.py b/Server/bkr/server/app.py
index 3f121d423..d0fe95528 100644
--- a/Server/bkr/server/app.py
+++ b/Server/bkr/server/app.py
@@ -21,7 +21,7 @@ def add_url_rule(self, rule, *args, **kwargs):
 
 
 app = PrefixedFlask('bkr.server')
-CORS(app, vary_header=False)
+CORS(app, vary_header=False, supports_credentials=True)
 
 # Make flask.jsonify use TurboJson
 app.json_encoder = turbojson.jsonify.GenericJSON