diff --git a/doc/requirements.txt b/doc/requirements.txt
index cd6430508..c87f47713 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,8 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-sphinx>=1.8.0,<2.0.0;python_version=='2.7' # BSD
-sphinx>=1.8.0,!=2.1.0;python_version>='3.4'  # BSD
+sphinx>=1.8.0,!=2.1.0  # BSD
 sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD
 openstackdocstheme>=1.30.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0
diff --git a/lower-constraints.txt b/lower-constraints.txt
index d198843b2..7fc557ba2 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -26,7 +26,6 @@ extras==1.0.0
 fasteners==0.7.0
 fixtures==3.0.0
 flake8==2.5.5
-futures==3.0.0
 futurist==1.2.0
 gitdb==0.6.4
 GitPython==1.0.1
@@ -35,7 +34,6 @@ greenlet==0.4.10
 hacking==0.12.0
 httplib2==0.9.1
 idna==2.6
-ipaddress==1.0.17;python_version<'3.3' # PSF
 iso8601==0.1.11
 Jinja2==2.10
 jmespath==0.9.0
diff --git a/requirements.txt b/requirements.txt
index 01a7d6782..b252e10f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,13 +4,11 @@
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 
 Babel!=2.4.0,>=2.3.4 # BSD
-ipaddress>=1.0.17;python_version<'3.3' # PSF
 passlib>=1.7.0 # BSD
 psutil>=3.2.2 # BSD
 python-ironic-inspector-client>=1.5.0 # Apache-2.0
 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-ironicclient!=2.5.2,!=2.7.1,!=3.0.0,>=2.3.0 # Apache-2.0
 python-mistralclient!=3.2.0,>=3.1.0 # Apache-2.0
 python-openstackclient>=5.2.0 # Apache-2.0
 simplejson>=3.5.1 # MIT
@@ -19,5 +17,4 @@ osc-lib>=1.8.0 # Apache-2.0
 websocket-client>=0.44.0 # LGPLv2+
 tripleo-common>=12.2.0 # Apache-2.0
 cryptography>=2.1 # BSD/Apache-2.0
-futures>=3.0.0;python_version=='2.7' or python_version=='2.6' # BSD
 ansible-runner>=1.4.4 # Apache 2.0
diff --git a/setup.cfg b/setup.cfg
index 10a2fbcc3..547d10236 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -7,6 +7,7 @@ license = Apache License, Version 2.0
 author = OpenStack
 author-email = openstack-discuss@lists.openstack.org
 home-page = https://docs.openstack.org/python-tripleoclient/latest/
+python-requires = >=3.6
 classifier =
     Environment :: Console
     Environment :: OpenStack
@@ -16,6 +17,8 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: OS Independent
     Programming Language :: Python
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
@@ -24,9 +27,6 @@ classifier =
 packages =
     tripleoclient
 
-[wheel]
-universal = 1
-
 [compile_catalog]
 directory = tripleoclient/locale
 domain = tripleoclient
diff --git a/setup.py b/setup.py
index 566d84432..cd35c3c35 100644
--- a/setup.py
+++ b/setup.py
@@ -13,17 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
-# In python < 2.7.4, a lazy loading of package `pbr` will break
-# setuptools if some other modules registered functions in `atexit`.
-# solution from: http://bugs.python.org/issue15881#msg170215
-try:
-    import multiprocessing  # noqa
-except ImportError:
-    pass
-
 setuptools.setup(
     setup_requires=['pbr>=2.0.0'],
     pbr=True)