diff --git a/lower-constraints.txt b/lower-constraints.txt
index 57746f8d6f4..7a320ca3546 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -123,7 +123,7 @@ requests==2.14.2
 requestsexceptions==1.2.0
 rfc3986==0.3.1
 Routes==2.3.1
-ryu==4.14
+ryu==4.24
 simplejson==3.5.1
 six==1.10.0
 smmap==0.9.0
diff --git a/requirements.txt b/requirements.txt
index 1a42cea30f8..482c0f3f04e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ netifaces>=0.10.4 # MIT
 neutron-lib>=1.13.0 # Apache-2.0
 python-neutronclient>=6.7.0 # Apache-2.0
 tenacity>=3.2.1 # Apache-2.0
-ryu>=4.14 # Apache-2.0
+ryu>=4.24 # Apache-2.0
 SQLAlchemy!=1.1.5,!=1.1.6,!=1.1.7,!=1.1.8,>=1.0.10 # MIT
 WebOb>=1.7.1 # MIT
 keystoneauth1>=3.4.0 # Apache-2.0