diff --git a/lower-constraints.txt b/lower-constraints.txt
deleted file mode 100644
index 1e12c3248..000000000
--- a/lower-constraints.txt
+++ /dev/null
@@ -1,144 +0,0 @@
-alabaster==0.7.10
-appdirs==1.4.3
-asn1crypto==0.24.0
-Babel==2.3.4
-beautifulsoup4==4.6.0
-castellan==0.18.0
-certifi==2018.1.18
-cffi==1.14
-chardet==3.0.4
-cliff==2.11.0
-cmd2==0.8.1
-colorama==0.3.9
-contextlib2==0.5.5
-coverage==4.0
-cryptography==2.1.4
-debtcollector==1.19.0
-decorator==4.4.1
-deprecation==2.0
-Django==2.2
-django-appconf==1.0.2
-django-compressor==2.0
-django-formtools==2.2
-django-pyscss==2.0.2
-docutils==0.14
-dogpile.cache==0.6.5
-dulwich==0.19.0
-enmerkar==0.7.1
-extras==1.0.0
-fasteners==0.14.1
-fixtures==3.0.0
-futurist==1.6.0
-hacking==3.0.1
-horizon==18.3.1
-idna==2.6
-imagesize==1.0.0
-iso8601==0.1.11
-Jinja2==2.10
-jmespath==0.9.3
-jsonpatch==1.21
-jsonpointer==2.0
-jsonschema==2.6.0
-keystoneauth1==3.18.0
-linecache2==1.0.0
-MarkupSafe==1.0
-mccabe==0.6.0
-monotonic==1.4
-msgpack==0.5.6
-munch==2.2.0
-murano-pkg-check==0.3.0
-netaddr==0.7.19
-netifaces==0.10.6
-nodeenv==0.9.4
-openstackdocstheme==2.2.1
-openstacksdk==0.36.0
-os-client-config==1.29.0
-os-service-types==1.7.0
-osc-lib==2.0.0
-oslo.concurrency==3.26.0
-oslo.config==5.2.0
-oslo.context==2.20.0
-oslo.i18n==3.20.0
-oslo.log==3.36.0
-oslo.policy==1.34.0
-oslo.serialization==2.25.0
-oslo.utils==3.36.0
-osprofiler==2.3.0
-packaging==17.1
-pbr==2.0.0
-pep8==1.5.7
-Pint==0.8.1
-ply==3.11
-prettytable==0.7.2
-pycparser==2.18
-pyflakes==2.1.0
-Pygments==2.2.0
-pyinotify==0.9.6
-pymongo==3.6.1
-pyOpenSSL==17.5.0
-pyparsing==2.2.0
-pyperclip==1.6.0
-pyScss==1.3.7
-pytest==5.3.5
-python-barbicanclient==4.6.0
-python-cinderclient==5.0.0
-python-dateutil==2.7.0
-python-glanceclient==2.9.1
-python-keystoneclient==3.22.0
-python-mimeparse==1.6.0
-python-muranoclient==0.8.2
-python-neutronclient==6.7.0
-python-novaclient==15.1.0
-python-swiftclient==3.5.0
-pytz==2013.6
-PyYAML==3.12
-rcssmin==1.0.6
-reno==3.1.0
-requests==2.18.4
-requestsexceptions==1.4.0
-rfc3986==1.1.0
-rjsmin==1.0.12
-selenium==2.50.1
-semantic-version==2.3.1
-simplejson==3.13.2
-snowballstemmer==1.2.1
-Sphinx==2.0.0
-sphinxcontrib-websupport==1.0.1
-stevedore==1.28.0
-termcolor==1.1.0
-testtools==2.2.0
-traceback2==1.4.0
-unittest2==1.1.0
-urllib3==1.22
-warlock==1.3.0
-WebOb==1.7.4
-wrapt==1.10.11
-XStatic==1.0.1
-XStatic-Angular==1.5.8.0
-XStatic-Angular-Bootstrap==2.2.0.0
-XStatic-Angular-FileUpload==12.0.4.0
-XStatic-Angular-Gettext==2.3.8.0
-XStatic-Angular-lrdragndrop==1.0.2.2
-XStatic-Angular-Schema-Form==0.8.13.0
-XStatic-Bootstrap-Datepicker==1.3.1.0
-XStatic-Bootstrap-SCSS==3.3.7.1
-XStatic-bootswatch==3.3.7.0
-XStatic-D3==3.5.17.0
-XStatic-Font-Awesome==4.7.0.0
-XStatic-Hogan==2.0.0.2
-XStatic-Jasmine==2.4.1.1
-XStatic-jQuery==1.10.2.1
-XStatic-JQuery-Migrate==1.2.1.1
-XStatic-jquery-ui==1.12.0.1
-XStatic-JQuery.quicksearch==2.0.3.1
-XStatic-JQuery.TableSorter==2.14.5.1
-XStatic-JSEncrypt==2.3.1.1
-XStatic-mdi==1.6.50.2
-XStatic-objectpath==1.2.1.0
-XStatic-Rickshaw==1.5.0.0
-XStatic-roboto-fontface==0.5.0.0
-XStatic-smart-table==1.4.13.2
-XStatic-Spin==1.2.5.2
-XStatic-term.js==0.0.7.0
-XStatic-tv4==1.2.7.0
-yaql==1.1.3
diff --git a/requirements.txt b/requirements.txt
index c649ed932..af6fe0f3c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,6 @@
+# Requirements lower bounds listed here are our best effort to keep them up to
+# date but we do not test them so no guarantee of having them all correct. If
+# you find any incorrect lower bounds, let us know or propose a fix.
 # 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.
diff --git a/tox.ini b/tox.ini
index d3c56b8bf..7ac4e7fe3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -58,10 +58,3 @@ ignore = H202,W504
 show-source = true
 builtins = _
 exclude=build,.git,.tox,dist,doc,*lib/python*,*egg,tools,horizon,settings.py,*/local/*,functional_tests,node_modules
-
-[testenv:lower-constraints]
-deps =
-  -c{toxinidir}/lower-constraints.txt
-  -r{toxinidir}/test-requirements.txt
-  -r{toxinidir}/requirements.txt
-  http://tarballs.openstack.org/heat-dashboard/heat-dashboard-master.tar.gz