diff --git a/lower-constraints.txt b/lower-constraints.txt
index 4ae9a325d..673db4333 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -1,48 +1,48 @@
 alabaster==0.7.10
-alembic==0.9.8
+alembic==0.8.10
 appdirs==1.4.3
-automaton==1.14.0
-Babel==2.5.3
+automaton==1.9.0
+Babel==2.3.4
 certifi==2018.1.18
 chardet==3.0.4
 click==6.7
 cliff==2.11.0
 cmd2==0.8.1
-construct==2.8.22
+construct==2.8.10
 contextlib2==0.5.5
-coverage==4.5.1
+coverage==4.0
 debtcollector==1.19.0
 decorator==4.2.1
 deprecation==2.0
-doc8==0.8.0
+doc8==0.6.0
 docutils==0.14
 dogpile.cache==0.6.5
 dulwich==0.19.0
 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
+flake8-import-order==0.13
 flake8==2.5.5
-flake8-import-order==0.17.1
-Flask==0.12.2
+Flask==0.10
 future==0.16.0
-futurist==1.6.0
+futurist==1.2.0
 greenlet==0.4.13
 hacking==1.0.0
 idna==2.6
 imagesize==1.0.0
-ironic-lib==2.12.0
+ironic-lib==2.5.0
 iso8601==0.1.12
 itsdangerous==0.24
 Jinja2==2.10
 jmespath==0.9.3
 jsonpatch==1.21
-jsonpath-rw==1.4.0
+jsonpath-rw==1.2.0
 jsonpointer==2.0
 jsonschema==2.6.0
 keystoneauth1==3.4.0
-keystonemiddleware==4.21.0
+keystonemiddleware==4.17.0
 linecache2==1.0.0
 Mako==1.0.7
 MarkupSafe==1.0
@@ -52,9 +52,9 @@ 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
-openstackdocstheme==1.20.0
+openstackdocstheme==1.18.1
 openstacksdk==0.12.0
 os-client-config==1.29.0
 os-service-types==1.2.0
@@ -63,27 +63,27 @@ 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.middleware==3.35.0
-oslo.policy==1.34.0
-oslo.rootwrap==5.13.0
-oslo.serialization==2.25.0
+oslo.context==2.19.2
+oslo.db==4.27.0
+oslo.i18n==3.15.3
+oslo.log==3.36.0
+oslo.middleware==3.31.0
+oslo.policy==1.30.0
+oslo.rootwrap==5.8.0
+oslo.serialization==2.18.0
 oslo.service==1.30.0
-oslo.utils==3.36.0
-oslotest==3.3.0
+oslo.utils==3.33.0
+oslotest==3.2.0
 packaging==17.1
 Paste==2.0.3
 PasteDeploy==1.5.2
-pbr==3.1.1
+pbr==2.0.0
 pep8==1.5.7
 ply==3.11
 prettytable==0.7.2
 pycadf==2.7.0
 pycodestyle==2.3.1
-pydot3==1.0.9
+pydot3==1.0.8
 pyflakes==0.8.1
 Pygments==2.2.0
 pyinotify==0.9.6
@@ -95,32 +95,32 @@ python-ironicclient==2.3.0
 python-keystoneclient==3.15.0
 python-mimeparse==1.6.0
 python-subunit==1.2.0
-python-swiftclient==3.5.0
-pytz==2018.3
+python-swiftclient==3.2.0
+pytz==2013.6
 PyYAML==3.12
-reno==2.7.0
+reno==2.5.0
 repoze.lru==0.7
 requests==2.18.4
 requestsexceptions==1.4.0
 restructuredtext-lint==1.1.3
-retrying==1.3.3
+retrying==1.2.3
 rfc3986==1.1.0
 Routes==2.4.1
 simplejson==3.13.2
-six==1.11.0
+six==1.10.0
 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
+stevedore==1.20.0
 Tempita==0.5.2
 testrepository==0.0.20
-testresources==2.0.1
-testscenarios==0.5.0
+testresources==2.0.0
+testscenarios==0.4
 testtools==2.3.0
 traceback2==1.4.0
 unittest2==1.1.0
diff --git a/requirements.txt b/requirements.txt
index 7787bcbdd..7a4e9b23e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ automaton>=1.9.0 # Apache-2.0
 alembic>=0.8.10 # MIT
 Babel!=2.4.0,>=2.3.4 # BSD
 construct<2.9,>=2.8.10 # MIT
-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
 Flask!=0.11,<1.0,>=0.10 # BSD
 futurist>=1.2.0 # Apache-2.0
 ironic-lib>=2.5.0 # Apache-2.0