diff --git a/tox.ini b/tox.ini
index 9cd3e643b..1d75dfc8d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,21 +32,18 @@ commands =
   bandit -r zun -x tests -n5 -ll
 
 [testenv:pep8-constraints]
-install_command = {[testenv:common-constraints]install_command}
 commands = flake8 {posargs}
 
 [testenv:venv]
 commands = {posargs}
 
 [testenv:venv-constraints]
-install_command = {[testenv:common-constraints]install_command}
 commands = {posargs}
 
 [testenv:cover]
 commands = python setup.py test --coverage --testr-args='{posargs}'
 
 [testenv:cover-constraints]
-install_command = {[testenv:common-constraints]install_command}
 commands = python setup.py test --coverage --testr-args='{posargs}'
 
 [testenv:docs]
@@ -55,14 +52,12 @@ commands =
     python setup.py build_sphinx
 
 [testenv:docs-constraints]
-install_command = {[testenv:common-constraints]install_command}
 commands = python setup.py build_sphinx
 
 [testenv:debug]
 commands = oslo_debug_helper {posargs}
 
 [testenv:debug-constraints]
-install_command = {[testenv:common-constraints]install_command}
 commands = oslo_debug_helper {posargs}
 
 [flake8]
@@ -83,11 +78,6 @@ commands =
   {toxinidir}/tools/fast8.sh
 
 [testenv:releasenotes]
-# NOTE(sheel.rana): This target does not use constraints because
-# upstream infra does not yet support it.
-# Once that's fixed, we can drop the install_command.
-
-install_command = pip install -U --force-reinstall {opts} {packages}
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
 [testenv:genconfig]