diff --git a/types/datasource.d.ts b/types/datasource.d.ts
index d124ffd3..bf602976 100644
--- a/types/datasource.d.ts
+++ b/types/datasource.d.ts
@@ -9,7 +9,7 @@ import {
   ModelBaseClass,
   ModelBuilder,
   ModelDefinition,
-  PropertyDefinition,
+  PropertyDefinition
 } from './model';
 import {EventEmitter} from 'events';
 import {IsolationLevel, Transaction} from './transaction-mixin';
@@ -84,6 +84,8 @@ export declare class DataSource extends EventEmitter {
 
   connector?: Connector;
 
+  definitions: {[modelName: string]: ModelDefinition};
+
   DataAccessObject: AnyObject & {prototype: AnyObject};
 
   constructor(name: string, settings?: Options, modelBuilder?: ModelBuilder);