diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index 394faca..ed67dbc 100644
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -7,11 +7,18 @@ TOBIKO_PLUGIN_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 # so let's enable it always when Tobiko is installed
 KEYSTONE_ADMIN_ENDPOINT=True
 
+TOX_MIN_VERSION="4.13"
+if [ "$REQUIREMENTS_BRANCH" == "stable/2023.2" ]; then
+    TOX_MIN_VERSION="4.5.1"
+elif [[ "$REQUIREMENTS_BRANCH" == "stable/2023.1" ]] || [[ "$REQUIREMENTS_BRANCH" == "stable/zed" ]]; then
+    TOX_MIN_VERSION="3.28"
+fi
+
 function install_tobiko_deps {
     install_python3
     git_clone "${TOBIKO_REPO}" "${TOBIKO_DIR}" "${TOBIKO_VERSION}"
     install_bindep "${TOBIKO_DIR}/bindep.txt" test
-    pip_install 'tox>=4.13'
+    pip_install "tox>=${TOX_MIN_VERSION}"
 }