diff --git a/requirements.txt b/requirements.txt
index 2febb7e..9a5e99f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,6 +7,7 @@
 oslo.config>=5.2.0 # Apache-2.0
 ipaddress>=1.0.17;python_version<'3.3' # PSF
 netaddr>=0.7.18 # BSD
+os-ken>=0.3.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 oslo.utils>=3.33.0 # Apache-2.0