diff --git a/README.rst b/README.rst
index 261f234..3261f4e 100644
--- a/README.rst
+++ b/README.rst
@@ -31,6 +31,8 @@
         enable_force_upload: true
         availability_zone_fallback: True
         image_conversion_dir: /var/tmp/cinder/conversion
+        concurrency:
+          lock_path: '/var/lock/cinder'
         database:
           engine: mysql
           host: 127.0.0.1
@@ -88,6 +90,8 @@
         enable_force_upload: true
         my_ip: 192.168.0.254
         image_conversion_dir: /var/tmp/cinder/conversion
+        concurrency:
+          lock_path: '/var/lock/cinder'
         database:
           engine: mysql
           host: 127.0.0.1