diff --git a/lower-constraints.txt b/lower-constraints.txt
index 0f15c567bf..00bae195da 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -1,33 +1,34 @@
 alabaster==0.7.10
-alembic==0.9.8
+alembic==0.8.10
 amqp==2.2.2
 appdirs==1.4.3
 asn1crypto==0.24.0
 automaton==1.14.0
-Babel==2.5.3
-bandit==1.4.0
+Babel==2.3.4
+bandit==1.1.0
 bashate==0.5.1
 beautifulsoup4==4.6.0
 cachetools==2.0.1
 certifi==2018.1.18
 cffi==1.11.5
 chardet==3.0.4
-cliff==2.11.0
+cliff==2.8.0
 cmd2==0.8.1
 contextlib2==0.5.5
-coverage==4.5.1
-cryptography==2.1.4
+coverage==4.0
+cryptography==2.1
 debtcollector==1.19.0
-decorator==4.2.1
+decorator==3.4.0
 deprecation==2.0
-doc8==0.8.0
-docker==3.1.1
+doc8==0.6.0
 docker-pycreds==0.2.2
+docker==2.4.2
 docutils==0.14
 dogpile.cache==0.6.5
 dulwich==0.19.0
+enum34==1.0.4
 enum-compat==0.0.2
-eventlet==0.20.0
+eventlet==0.18.2
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0
@@ -42,20 +43,20 @@ hacking==0.12.0
 idna==2.6
 imagesize==1.0.0
 ipaddress==1.0.19
-iso8601==0.1.12
+iso8601==0.1.11
 Jinja2==2.10
 jmespath==0.9.3
-jsonpatch==1.21
+jsonpatch==1.16
 jsonpointer==2.0
 jsonschema==2.6.0
 keystoneauth1==3.4.0
-keystonemiddleware==4.21.0
+keystonemiddleware==4.17.0
 kombu==4.1.0
 kubernetes==5.0.0
 linecache2==1.0.0
 logutils==0.3.5
 Mako==1.0.7
-marathon==0.9.3
+marathon==0.8.6
 MarkupSafe==1.0
 mccabe==0.2.1
 mock==2.0.0
@@ -63,13 +64,13 @@ monotonic==1.4
 mox3==0.25.0
 msgpack==0.5.6
 munch==2.2.0
-netaddr==0.7.19
+netaddr==0.7.18
 netifaces==0.10.6
 networkx==1.11
 oauthlib==2.0.6
-openstackdocstheme==1.20.0
+openstackdocstheme==1.18.1
 openstacksdk==0.12.0
-os-api-ref==1.5.0
+os-api-ref==1.4.0
 os-client-config==1.29.0
 os-service-types==1.2.0
 os-testr==1.0.0
@@ -77,33 +78,33 @@ osc-lib==1.10.0
 oslo.cache==1.29.0
 oslo.concurrency==3.26.0
 oslo.config==5.2.0
-oslo.context==2.20.0
-oslo.db==4.35.0
-oslo.i18n==3.20.0
-oslo.log==3.37.0
-oslo.messaging==5.36.0
-oslo.middleware==3.35.0
-oslo.policy==1.34.0
-oslo.reports==1.27.0
-oslo.serialization==2.25.0
-oslo.service==1.30.0
-oslo.utils==3.36.0
-oslo.versionedobjects==1.32.0
-oslotest==3.3.0
-osprofiler==2.0.0
+oslo.context==2.19.2
+oslo.db==4.27.0
+oslo.i18n==3.15.3
+oslo.log==3.36.0
+oslo.messaging==5.29.0
+oslo.middleware==3.31.0
+oslo.policy==1.30.0
+oslo.reports==1.18.0
+oslo.serialization==2.18.0
+oslo.service==1.24.0
+oslo.utils==3.33.0
+oslo.versionedobjects==1.31.2
+oslotest==3.2.0
+osprofiler==1.4.0
 packaging==17.1
 Paste==2.0.3
 PasteDeploy==1.5.2
-pbr==3.1.1
-pecan==1.2.1
+pbr==2.0.0
+pecan==1.0.0
 pep8==1.5.7
-pika==0.10.0
 pika-pool==0.1.3
+pika==0.10.0
 prettytable==0.7.2
 psutil==5.4.3
-pyasn1==0.4.2
 pyasn1-modules==0.2.1
-pycadf==2.7.0
+pyasn1==0.4.2
+pycadf==1.1.0
 pycparser==2.18
 pyflakes==0.8.1
 Pygments==2.2.0
@@ -111,49 +112,50 @@ pyinotify==0.9.6
 pyOpenSSL==17.5.0
 pyparsing==2.2.0
 pyperclip==1.6.0
-python-barbicanclient==4.6.0
+python-barbicanclient==4.5.2
 python-dateutil==2.7.0
 python-editor==1.0.3
-python-glanceclient==2.9.1
-python-heatclient==1.14.0
-python-keystoneclient==3.15.0
+python-glanceclient==2.8.0
+python-heatclient==1.10.0
+python-keystoneclient==3.8.0
 python-mimeparse==1.6.0
 python-neutronclient==6.7.0
-python-novaclient==10.1.0
-python-subunit==1.2.0
+python-novaclient==9.1.0
+python-subunit==1.0.0
 python-swiftclient==3.5.0
-pytz==2018.3
+pytz==2013.6
 PyYAML==3.12
-reno==2.7.0
+reno==2.5.0
 repoze.lru==0.7
-requests==2.18.4
 requests-oauthlib==0.8.0
 requests-toolbelt==0.8.0
+requests==2.14.2
 requestsexceptions==1.4.0
 restructuredtext-lint==1.1.3
 rfc3986==1.1.0
 Routes==2.4.1
 rsa==3.4.2
+setuptools==21.0.0
 simplegeneric==0.8.1
 simplejson==3.13.2
-six==1.11.0
+six==1.10.0
 smmap2==2.0.3
 snowballstemmer==1.2.1
-Sphinx==1.6.5
+Sphinx==1.6.2
 sphinxcontrib-websupport==1.0.1
-SQLAlchemy==1.2.5
 sqlalchemy-migrate==0.11.0
+SQLAlchemy==1.0.10
 sqlparse==0.2.4
 statsd==3.2.2
 stestr==2.0.0
-stevedore==1.28.0
-taskflow==3.1.0
+stevedore==1.20.0
+taskflow==2.16.0
 Tempita==0.5.2
 tenacity==4.9.0
-testrepository==0.0.20
+testrepository==0.0.18
 testresources==2.0.1
-testscenarios==0.5.0
-testtools==2.3.0
+testscenarios==0.4
+testtools==2.2.0
 traceback2==1.4.0
 unittest2==1.1.0
 urllib3==1.22
@@ -161,9 +163,9 @@ vine==1.1.4
 voluptuous==0.11.1
 waitress==1.1.0
 warlock==1.3.0
-WebOb==1.7.4
+WebOb==1.7.1
 websocket-client==0.47.0
 WebTest==2.0.29
-Werkzeug==0.14.1
+Werkzeug==0.9
 wrapt==1.10.11
-WSME==0.9.2
+WSME==0.8.0
diff --git a/requirements.txt b/requirements.txt
index b4feb07d91..0e5ffaaf04 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ cliff!=2.9.0,>=2.8.0 # Apache-2.0
 decorator>=3.4.0 # BSD
 docker>=2.4.2 # Apache-2.0
 enum34>=1.0.4;python_version=='2.7' or python_version=='2.6' or python_version=='3.3' # BSD
-eventlet!=0.18.3,!=0.20.1,<0.21.0,>=0.18.2 # MIT
+eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
 iso8601>=0.1.11 # MIT
 jsonpatch!=1.20,>=1.16 # BSD
 keystoneauth1>=3.4.0 # Apache-2.0