diff --git a/index.d.ts b/index.d.ts
index c98cb8f..95a7157 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -55,6 +55,10 @@ interface GetHookData {
      * sort only valid for "get" hooks
      */
     sort?: string[] | string
+    /**
+     * pipelineMod is a function to modify the mongodb query pipeline
+     */
+    pipelineMod?: (pipe: {[key: string]: any}[]) => {[key: string]: any}[]
 }
 
 interface PostHookData {