diff --git a/lower-constraints.txt b/lower-constraints.txt
index 499d223a29..3678947761 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -54,7 +54,7 @@ msgpack-python==0.4.0
 munch==2.1.0
 netaddr==0.7.18
 netifaces==0.10.4
-neutron-lib==1.18.0
+neutron-lib==1.21.0
 octavia==3.0.0
 openstackdocstheme==1.18.1
 openstacksdk==0.11.2
diff --git a/requirements.txt b/requirements.txt
index e5678ec12f..2a8b2428af 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ tenacity>=4.4.0 # Apache-2.0
 SQLAlchemy!=1.1.5,!=1.1.6,!=1.1.7,!=1.1.8,>=1.0.10 # MIT
 six>=1.10.0 # MIT
 stevedore>=1.20.0 # Apache-2.0
-neutron-lib>=1.18.0 # Apache-2.0
+neutron-lib>=1.21.0 # Apache-2.0
 osc-lib>=1.8.0 # Apache-2.0
 python-openstackclient>=3.16.0 # Apache-2.0
 oslo.concurrency>=3.26.0 # Apache-2.0