diff --git a/config/nodepool/scripts/prepare_node.sh b/config/nodepool/scripts/prepare_node.sh
index 4d08fb6b..2ae05b25 100755
--- a/config/nodepool/scripts/prepare_node.sh
+++ b/config/nodepool/scripts/prepare_node.sh
@@ -57,7 +57,7 @@ sudo service mysql stop
 sudo pip install -U $PIP_PACKAGES
 git clone https://git.openstack.org/openstack/sahara /tmp/sahara
 git clone https://git.openstack.org/openstack/sahara-tests /tmp/sahara-tests
-sudo pip install -U -r /tmp/sahara/requirements.txt
+sudo pip install -U -r /tmp/sahara/requirements.txt -c https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt
 git clone https://git.openstack.org/openstack-infra/project-config /tmp/project-config
 sudo mkdir -p /usr/local/jenkins/
 sudo mv /tmp/project-config/jenkins/scripts /usr/local/jenkins/slave_scripts
diff --git a/slave-scripts/gate-sahara.sh b/slave-scripts/gate-sahara.sh
index 4bc9cdbc..5bbed164 100755
--- a/slave-scripts/gate-sahara.sh
+++ b/slave-scripts/gate-sahara.sh
@@ -42,7 +42,7 @@ case $plugin in
        ;;
 esac
 
-sudo pip install -r requirements.txt . --no-cache-dir
+sudo pip install -U -c https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt -r requirements.txt . --no-cache-dir
 enable_pypi
 write_sahara_main_conf "$sahara_conf_file" "$sahara_plugin"
 write_tests_conf "$cluster_name" "$image_variable_name" "$image_name" "$scenario_conf_file"