diff --git a/requirements.txt b/requirements.txt
index f520962..7fe96fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,6 +17,7 @@ oslo.context>=2.19.2 # Apache-2.0
 oslo.service>=1.24.0 # Apache-2.0
 oslo.utils>=3.31.0 # Apache-2.0
 futurist>=1.2.0 # Apache-2.0
+taskflow>=2.7.0 # Apache-2.0
 keystoneauth1>=3.3.0 # Apache-2.0
 keystonemiddleware>=4.17.0 # Apache-2.0
 python-memcached>=1.56 # PSF