diff --git a/lower-constraints.txt b/lower-constraints.txt
deleted file mode 100644
index cc4165cd..00000000
--- a/lower-constraints.txt
+++ /dev/null
@@ -1,142 +0,0 @@
-amqp==2.1.1
-appdirs==1.3.0
-asn1crypto==0.23.0
-Babel==2.3.4
-cachetools==2.0.0
-cffi==1.14
-cliff==2.8.0
-cmd2==0.8.0
-contextlib2==0.4.0
-coverage==4.0
-cryptography==3.0
-debtcollector==1.2.0
-decorator==4.4.1
-deprecation==1.0
-Django==2.2
-django-appconf==1.0.2
-django-compressor==2.0
-django-pyscss==2.0.2
-dogpile.cache==0.6.5
-eventlet==0.18.2
-extras==1.0.0
-fasteners==0.7.0
-fixtures==3.0.0
-futurist==1.2.0
-greenlet==0.4.10
-horizon==17.1.0
-idna==2.6
-iso8601==0.1.11
-Jinja2==2.10
-jmespath==0.9.0
-jsonpatch==1.16
-jsonpointer==1.13
-jsonschema==2.6.0
-keystoneauth1==3.18.0
-kombu==4.0.0
-linecache2==1.0.0
-MarkupSafe==1.0
-mccabe==0.6.0
-monotonic==0.6
-msgpack-python==0.4.0
-munch==2.1.0
-netaddr==0.7.18
-netifaces==0.10.4
-openstacksdk==0.53.0
-os-client-config==1.28.0
-os-service-types==1.7.0
-osc-lib==1.8.0
-oslo.concurrency==3.26.0
-oslo.config==5.2.0
-oslo.context==2.19.2
-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.serialization==2.18.0
-oslo.service==1.24.0
-oslo.utils==3.33.0
-oslotest==3.2.0
-osprofiler==2.3.0
-Paste==2.0.2
-PasteDeploy==1.5.0
-pbr==2.0.0
-pep8==1.5.7
-pika==0.10.0
-pika-pool==0.1.3
-Pint==0.5
-positional==1.2.1
-prettytable==0.7.2
-pycparser==2.18
-pyflakes==2.1.0
-pyinotify==0.9.6
-pymongo==3.0.2
-pyOpenSSL==19.1.0
-pyparsing==2.1.0
-pyperclip==1.5.27
-pyScss==1.3.7
-python-barbicanclient==4.5.2
-python-cinderclient==5.0.0
-python-dateutil==2.5.3
-python-glanceclient==2.8.0
-python-keystoneclient==3.22.0
-python-mimeparse==1.6.0
-python-neutronclient==6.7.0
-python-novaclient==9.1.0
-python-subunit==1.0.0
-python-swiftclient==3.2.0
-pytz==2013.6
-PyYAML==3.13
-rcssmin==1.0.6
-repoze.lru==0.7
-requests==2.14.2
-requestsexceptions==1.2.0
-rfc3986==0.3.1
-rjsmin==1.0.12
-Routes==2.3.1
-selenium==2.50.1
-semantic-version==2.3.1
-simplejson==3.5.1
-six==1.10.0
-statsd==3.2.1
-stestr==2.0.0
-stevedore==1.20.0
-tenacity==3.2.1
-testrepository==0.0.18
-testscenarios==0.4
-testtools==2.2.0
-traceback2==1.4.0
-unittest2==1.1.0
-vine==1.1.4
-warlock==1.2.0
-WebOb==1.7.1
-wrapt==1.7.0
-XStatic==1.0.0
-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==1.8.2.1
-XStatic-JQuery-Migrate==1.2.1.1
-XStatic-jquery-ui==1.10.4.1
-XStatic-JQuery.quicksearch==2.0.3.1
-XStatic-JQuery.TableSorter==2.14.5.1
-XStatic-JSEncrypt==2.3.1.1
-XStatic-mdi==1.4.57.0
-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
-xvfbwrapper==0.1.3
diff --git a/requirements.txt b/requirements.txt
index 90dcfe68..4a9357bc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,7 @@
+# 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 2e5cf163..c182b27f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -82,9 +82,3 @@ show-source = True
 ignore = E123,E125,F405,W504
 builtins = _
 exclude=.venv,.git,.tox,.tmp,dist,doc,*lib/python*,*egg,build,node_modules
-
-[testenv:lower-constraints]
-deps =
-  -c{toxinidir}/lower-constraints.txt
-  -r{toxinidir}/test-requirements.txt
-  -r{toxinidir}/requirements.txt
diff --git a/zuul.d/projects.yaml b/zuul.d/projects.yaml
index 16b280d4..2a6fbe08 100644
--- a/zuul.d/projects.yaml
+++ b/zuul.d/projects.yaml
@@ -3,7 +3,6 @@
       - check-requirements
       - horizon-non-primary-django-jobs
       - horizon-nodejs-jobs
-      - openstack-lower-constraints-jobs
       - openstack-python3-zed-jobs-horizon
       - publish-openstack-docs-pti
       - release-notes-jobs-python3