diff --git a/tools/tox_install.sh b/tools/tox_install.sh
index 5f8e7c7c5..3acf392fa 100755
--- a/tools/tox_install.sh
+++ b/tools/tox_install.sh
@@ -19,14 +19,9 @@ neutron_installed=$(echo "import neutron" | python 2>/dev/null ; echo $?)
 
 set -e
 
-CONSTRAINTS_FILE=$1
+install_cmd="pip install -c$1"
 shift
 
-install_cmd="pip install"
-if [ $CONSTRAINTS_FILE != "unconstrained" ]; then
-    install_cmd="$install_cmd -c$CONSTRAINTS_FILE"
-fi
-
 if [ $neutron_installed -eq 0 ]; then
     echo "ALREADY INSTALLED" > /tmp/tox_install.txt
     echo "Neutron already installed; using existing package"
diff --git a/tox.ini b/tox.ini
index fef495cba..00cf2a069 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,8 +17,6 @@ commands =
 # mode. To do this define the TRACE_FAILONLY environmental variable.
 
 [testenv:releasenotes]
-# TODO(ihrachys): remove once infra supports constraints for this target
-install_command = {toxinidir}/tools/tox_install.sh unconstrained {opts} {packages}
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
 [testenv:pep8]
@@ -30,15 +28,11 @@ commands =
 whitelist_externals = sh
 
 [testenv:cover]
-# TODO(ihrachys): remove once infra supports constraints for this target
-install_command = {toxinidir}/tools/tox_install.sh unconstrained {opts} {packages}
 commands =
   python setup.py test --coverage --coverage-package-name=neutron_lbaas --testr-args='{posargs}'
   coverage report
 
 [testenv:venv]
-# TODO(ihrachys): remove once infra supports constraints for this target
-install_command = pip install -U {opts} {packages}
 commands = {posargs}
 
 [testenv:docs]