diff --git a/README.md b/README.md
index 9bfeb5aa..769cbe86 100644
--- a/README.md
+++ b/README.md
@@ -120,6 +120,7 @@ configUrl | Configs URL
 parameterMacro | MUST be a function. Function to set default value to parameters. Accepts two arguments parameterMacro(operation, parameter). Operation and parameter are objects passed for context, both remain immutable
 modelPropertyMacro | MUST be a function. Function to set default values to each property in model. Accepts one argument modelPropertyMacro(property), property is immutable
 docExpansion | Controls the default expansion setting for the operations and tags. It can be 'list' (expands only the tags), 'full' (expands the tags and operations) or 'none' (expands nothing). The default is 'list'.
+displayOperationId | Controls the display of operationId in operations list. The default is `false`.
 
 ### Plugins