diff --git a/requirements.txt b/requirements.txt
index 640c6b2de0..635d9db5b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ httplib2>=0.7.5
 iso8601>=0.1.9
 kombu>=3.0.7
 netaddr>=0.7.12
-oslo.concurrency>=2.0.0 # Apache-2.0
+oslo.concurrency>=2.1.0 # Apache-2.0
 oslo.config>=1.11.0 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0
 oslo.policy>=0.5.0 # Apache-2.0