diff --git a/lower-constraints.txt b/lower-constraints.txt
index 0a7fa42ed..d198843b2 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -117,7 +117,7 @@ python-mistralclient==3.1.0
 python-muranoclient==0.8.2
 python-neutronclient==6.7.0
 python-novaclient==9.1.0
-python-openstackclient==3.12.0
+python-openstackclient==5.2.0
 python-senlinclient==1.1.0
 python-subunit==1.0.0
 python-swiftclient==3.2.0
diff --git a/requirements.txt b/requirements.txt
index b4012ce37..01a7d6782 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ python-heatclient>=1.10.0 # Apache-2.0
 python-ironicclient!=2.5.2,!=2.7.1,!=3.0.0,>=2.3.0,<4.0.0;python_version=='2.7' # Apache-2.0
 python-ironicclient!=2.5.2,!=2.7.1,!=3.0.0,>=2.3.0;python_version>='3.6' # Apache-2.0
 python-mistralclient!=3.2.0,>=3.1.0 # Apache-2.0
-python-openstackclient>=3.12.0 # Apache-2.0
+python-openstackclient>=5.2.0 # Apache-2.0
 simplejson>=3.5.1 # MIT
 six>=1.10.0 # MIT
 osc-lib>=1.8.0 # Apache-2.0