diff --git a/README.rst b/README.rst
index 1392575..8cebe7e 100644
--- a/README.rst
+++ b/README.rst
@@ -28,6 +28,8 @@
         bind:
           host: 127.0.0.1
           port: 8777
+        concurrency:
+          lock_path: '/var/lib/ceilometer/tmp'
         identity:
           engine: keystone
           host: 127.0.0.1
@@ -181,6 +183,8 @@
         enabled: true
         version: mitaka
         secret: pwd
+        concurrency:
+          lock_path: '/var/lib/ceilometer/tmp'
         identity:
           engine: keystone
           host: 127.0.0.1