diff --git a/requirements.txt b/requirements.txt
index 3bc59f9c4..5db7451e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@
 pbr<2.0,>=1.3
 Babel>=1.3
 eventlet>=0.17.4
-oslo.concurrency>=2.1.0 # Apache-2.0
+oslo.concurrency>=2.3.0 # Apache-2.0
 oslo.log>=1.6.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0