diff --git a/requirements.txt b/requirements.txt
index eeeb4176..0d89d61f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,3 +13,4 @@ oslo.log>=3.36.0 # Apache-2.0
 oslo.utils>=3.33.0 # Apache-2.0
 stevedore>=1.20.0 # Apache-2.0
 keystoneauth1>=3.4.0 # Apache-2.0
+requests>=2.14.2,!=2.20.0 # Apache-2.0