diff --git a/requirements.txt b/requirements.txt
index 2055389df..254f9427d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ kombu!=4.0.2,>=4.0.0 # BSD
 
 # used by zmq driver
 futures>=3.0.0;python_version=='2.7' or python_version=='2.6' # BSD
-tenacity>=3.2.1 # Apache-2.0
+tenacity>=4.4.0 # Apache-2.0
 
 # middleware
 oslo.middleware>=3.31.0 # Apache-2.0