diff --git a/global-requirements.txt b/global-requirements.txt
index 5422acabb6..eb70df5c6d 100644
--- a/global-requirements.txt
+++ b/global-requirements.txt
@@ -165,7 +165,7 @@ requests>=2.5.2
 requests-aws>=0.1.4    # BSD License (3 clause)
 requests-kerberos>=0.6;python_version=='2.7' # MIT
 rfc3986>=0.2.0  # Apache-2.0
-Routes>=1.12.3,!=2.0
+Routes>=1.12.3,!=2.0,!=2.1
 rtslib-fb>=2.1.41
 semantic_version>=2.3.1
 fasteners>=0.7  # Apache-2.0