diff --git a/mongoose/index.d.ts b/mongoose/index.d.ts
index 5546a177d7..e7446fccc3 100644
--- a/mongoose/index.d.ts
+++ b/mongoose/index.d.ts
@@ -609,9 +609,13 @@ declare module "mongoose" {
      * @param method name of the method to hook
      * @param fn callback
      */
-    post<T extends Document>(method: string, fn: (doc: T, next: (err?: NativeError) => void,
-      ...otherArgs: any[]) => void): this;
-    post<T extends Document>(method: string, fn: (doc: T) => void, ...args: any[]): this;
+    post<T extends Document>(method: string, fn: (
+      error: mongodb.MongoError, doc: T, next: (err?: NativeError) => void
+    ) => void): this;
+
+    post<T extends Document>(method: string, fn: (
+      doc: T, next: (err?: NativeError) => void
+    ) => void): this;
 
     /**
      * Defines a pre hook for the document.
diff --git a/mongoose/mongoose-tests.ts b/mongoose/mongoose-tests.ts
index df93a10476..28785d301e 100644
--- a/mongoose/mongoose-tests.ts
+++ b/mongoose/mongoose-tests.ts
@@ -266,8 +266,19 @@ schema.plugin(function (schema, opts) {
 schema.get('path');
   opts.hasOwnProperty('');
 }).plugin(cb, {opts: true});
-schema.post('post', function (doc) {}).post('post', function (doc, next) {
+import { Schema, Model, Document, NativeError } from 'mongoose';
+schema
+.post('save', function (error, doc, next) {
+  error.stack;
+  doc.model;
+  next.apply;
+})
+.post('save', function (doc: mongoose.Document, next: Function) {
+  doc.model;
   next(new Error());
+})
+.post('save', function (doc: mongoose.Document) {
+  doc.model;
 });
 schema.queue('m1', [1, 2, 3]).queue('m2', [[]]);
 schema.remove('path');