diff --git a/lib/cinder b/lib/cinder
index cbe732e..099cfda 100644
--- a/lib/cinder
+++ b/lib/cinder
@@ -341,7 +341,7 @@
             -e 's/snapshot_autoextend_percent =.*/snapshot_autoextend_percent = 20/' \
             /etc/lvm/lvm.conf
     fi
-    iniset $CINDER_CONF keystone_authtoken auth_uri $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT
+    configure_API_version $CINDER_CONF $IDENTITY_API_VERSION
     iniset $CINDER_CONF keystone_authtoken admin_user cinder
     iniset $CINDER_CONF keystone_authtoken admin_tenant_name $SERVICE_TENANT_NAME
     iniset $CINDER_CONF keystone_authtoken admin_password $SERVICE_PASSWORD
diff --git a/lib/glance b/lib/glance
index 135136d..321174e 100644
--- a/lib/glance
+++ b/lib/glance
@@ -83,7 +83,7 @@
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken auth_port $KEYSTONE_AUTH_PORT
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken auth_protocol $KEYSTONE_AUTH_PROTOCOL
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken cafile $KEYSTONE_SSL_CA
-    iniset $GLANCE_REGISTRY_CONF keystone_authtoken auth_uri $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/
+    configure_API_version $GLANCE_REGISTRY_CONF $IDENTITY_API_VERSION
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken admin_tenant_name $SERVICE_TENANT_NAME
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken admin_user glance
     iniset $GLANCE_REGISTRY_CONF keystone_authtoken admin_password $SERVICE_PASSWORD
@@ -101,7 +101,7 @@
     iniset $GLANCE_API_CONF keystone_authtoken auth_port $KEYSTONE_AUTH_PORT
     iniset $GLANCE_API_CONF keystone_authtoken auth_protocol $KEYSTONE_AUTH_PROTOCOL
     iniset $GLANCE_API_CONF keystone_authtoken cafile $KEYSTONE_SSL_CA
-    iniset $GLANCE_API_CONF keystone_authtoken auth_uri $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/
+    configure_API_version $GLANCE_API_CONF $IDENTITY_API_VERSION
     iniset $GLANCE_API_CONF keystone_authtoken admin_tenant_name $SERVICE_TENANT_NAME
     iniset $GLANCE_API_CONF keystone_authtoken admin_user glance
     iniset $GLANCE_API_CONF keystone_authtoken admin_password $SERVICE_PASSWORD
diff --git a/lib/heat b/lib/heat
index e44a618..59fd3d7 100644
--- a/lib/heat
+++ b/lib/heat
@@ -95,7 +95,7 @@
     iniset $HEAT_CONF keystone_authtoken auth_host $KEYSTONE_AUTH_HOST
     iniset $HEAT_CONF keystone_authtoken auth_port $KEYSTONE_AUTH_PORT
     iniset $HEAT_CONF keystone_authtoken auth_protocol $KEYSTONE_AUTH_PROTOCOL
-    iniset $HEAT_CONF keystone_authtoken auth_uri $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/v2.0
+    configure_API_version $HEAT_CONF $IDENTITY_API_VERSION
     iniset $HEAT_CONF keystone_authtoken cafile $KEYSTONE_SSL_CA
     iniset $HEAT_CONF keystone_authtoken admin_tenant_name $SERVICE_TENANT_NAME
     iniset $HEAT_CONF keystone_authtoken admin_user heat
diff --git a/lib/keystone b/lib/keystone
index 29b9604..79f1fd9 100644
--- a/lib/keystone
+++ b/lib/keystone
@@ -335,6 +335,14 @@
     fi
 }
 
+# Configure the API version for the OpenStack projects.
+# configure_API_version conf_file version
+function configure_API_version() {
+    local conf_file=$1
+    local api_version=$2
+    iniset $conf_file keystone_authtoken auth_uri $KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:$KEYSTONE_SERVICE_PORT/v$api_version
+}
+
 # init_keystone() - Initialize databases, etc.
 function init_keystone() {
     if is_service_enabled ldap; then