diff --git a/requirements.txt b/requirements.txt
index 23c0126f..6b4ee61d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ oslo.i18n>=1.5.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0
 oslo.utils>=2.0.0 # Apache-2.0
 iso8601>=0.1.9
-requests>=2.5.2
+requests!=2.8.0,>=2.5.2
 python-keystoneclient>=1.6.0
 PyYAML>=3.1.0
 stevedore>=1.5.0 # Apache-2.0