diff --git a/src/main/java/org/gitlab4j/api/webhook/EventMergeRequest.java b/src/main/java/org/gitlab4j/api/webhook/EventMergeRequest.java
index 157d0dee5..7a5eefd42 100644
--- a/src/main/java/org/gitlab4j/api/webhook/EventMergeRequest.java
+++ b/src/main/java/org/gitlab4j/api/webhook/EventMergeRequest.java
@@ -60,6 +60,7 @@ public class EventMergeRequest {
     private Integer timeEstimate;
     private Duration humanTimeEstimate;
     private List<Long> assigneeIds;
+    private List<Long> reviewerIds;
 
     public Long getAssigneeId() {
         return this.assigneeId;
@@ -437,6 +438,14 @@ public void setAssigneeIds(List<Long> assigneeIds) {
         this.assigneeIds = assigneeIds;
     }
 
+    public List<Long> getReviewerIds() {
+        return reviewerIds;
+    }
+
+    public void setReviewerIds(List<Long> reviewerIds) {
+        this.reviewerIds = reviewerIds;
+    }
+
     @Override
     public String toString() {
         return (JacksonJson.toJsonString(this));
diff --git a/src/main/java/org/gitlab4j/api/webhook/MergeRequestEvent.java b/src/main/java/org/gitlab4j/api/webhook/MergeRequestEvent.java
index 4108efb6d..48592e682 100644
--- a/src/main/java/org/gitlab4j/api/webhook/MergeRequestEvent.java
+++ b/src/main/java/org/gitlab4j/api/webhook/MergeRequestEvent.java
@@ -3,6 +3,7 @@
 import java.util.List;
 
 import org.gitlab4j.api.models.Assignee;
+import org.gitlab4j.api.models.Reviewer;
 import org.gitlab4j.api.models.User;
 import org.gitlab4j.api.utils.JacksonJson;
 
@@ -18,6 +19,7 @@ public class MergeRequestEvent extends AbstractEvent {
     private List<EventLabel> labels;
     private MergeRequestChanges changes;
     private List<Assignee> assignees;
+    private List<Reviewer> reviewers;
 
     public String getObjectKind() {
         return (OBJECT_KIND);
@@ -84,6 +86,14 @@ public void setAssignees(List<Assignee> assignees) {
         this.assignees = assignees;
     }
 
+    public List<Reviewer> getReviewers() {
+        return reviewers;
+    }
+
+    public void setReviewers(List<Reviewer> reviewers) {
+        this.reviewers = reviewers;
+    }
+
     public static class ObjectAttributes extends EventMergeRequest {
     }
 
diff --git a/src/test/resources/org/gitlab4j/api/merge-request-event.json b/src/test/resources/org/gitlab4j/api/merge-request-event.json
index 9cc387a54..4d8cfc088 100644
--- a/src/test/resources/org/gitlab4j/api/merge-request-event.json
+++ b/src/test/resources/org/gitlab4j/api/merge-request-event.json
@@ -1,76 +1,89 @@
 {
   "object_kind": "merge_request",
   "user": {
+    "id": 1,
     "name": "Administrator",
     "username": "root",
-    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
+    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
+    "email": "admin@example.com"
   },
   "project": {
-    "name": "awesome_project",
-    "description": "",
-    "web_url": "http://example.com/awesome_space/awesome_project",
-    "git_ssh_url": "git@example.com:awesome_space/awesome_project.git",
-    "git_http_url": "http://example.com/awesome_space/awesome_project.git",
-    "namespace": "awesome_space",
+    "id": 1,
+    "name": "Gitlab Test",
+    "description": "Aut reprehenderit ut est.",
+    "web_url": "http://example.com/gitlabhq/gitlab-test",
+    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
+    "git_ssh_url": "git@example.com:gitlabhq/gitlab-test.git",
+    "git_http_url": "http://example.com/gitlabhq/gitlab-test.git",
+    "namespace": "GitlabHQ",
     "visibility_level": 20,
-    "path_with_namespace": "awesome_space/awesome_project",
+    "path_with_namespace": "gitlabhq/gitlab-test",
     "default_branch": "master",
-    "homepage": "http://example.com/awesome_space/awesome_project",
-    "url": "git@example.com:awesome_space/awesome_project.git",
-    "ssh_url": "git@example.com:awesome_space/awesome_project.git",
-    "http_url": "http://example.com/awesome_space/awesome_project.git"
+    "homepage": "http://example.com/gitlabhq/gitlab-test",
+    "url": "http://example.com/gitlabhq/gitlab-test.git",
+    "ssh_url": "git@example.com:gitlabhq/gitlab-test.git",
+    "http_url": "http://example.com/gitlabhq/gitlab-test.git"
   },
   "repository": {
-    "name": "awesome_project",
-    "url": "git@example.com:awesome_space/awesome_project.git",
-    "description": "",
-    "homepage": "http://example.com/awesome_space/awesome_project"
+    "name": "Gitlab Test",
+    "url": "http://example.com/gitlabhq/gitlab-test.git",
+    "description": "Aut reprehenderit ut est.",
+    "homepage": "http://example.com/gitlabhq/gitlab-test"
   },
   "object_attributes": {
     "id": 99,
+    "iid": 1,
     "target_branch": "master",
     "source_branch": "ms-viewport",
     "source_project_id": 14,
     "author_id": 51,
+    "assignee_ids": [
+      6
+    ],
     "assignee_id": 6,
+    "reviewer_ids": [
+      6
+    ],
     "title": "MS-Viewport",
     "created_at": "2013-12-03T17:23:34Z",
     "updated_at": "2013-12-03T17:23:34Z",
     "state": "opened",
+    "work_in_progress": false,
     "merge_status": "unchecked",
     "target_project_id": 14,
-    "iid": 1,
-    "merge_commit_sha": "5f72688f7af57df23ee7510cec59b909289964f1",
     "description": "",
-    "source":{
-      "name":"Awesome Project",
-      "description":"Aut reprehenderit ut est.",
-      "web_url":"http://example.com/awesome_space/awesome_project",
-      "git_ssh_url":"git@example.com:awesome_space/awesome_project.git",
-      "git_http_url":"http://example.com/awesome_space/awesome_project.git",
-      "namespace":"Awesome Space",
-      "visibility_level":20,
-      "path_with_namespace":"awesome_space/awesome_project",
-      "default_branch":"master",
-      "homepage":"http://example.com/awesome_space/awesome_project",
-      "url":"http://example.com/awesome_space/awesome_project.git",
-      "ssh_url":"git@example.com:awesome_space/awesome_project.git",
-      "http_url":"http://example.com/awesome_space/awesome_project.git"
+    "url": "http://example.com/diaspora/merge_requests/1",
+    "source": {
+      "name": "Awesome Project",
+      "description": "Aut reprehenderit ut est.",
+      "web_url": "http://example.com/awesome_space/awesome_project",
+      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
+      "git_ssh_url": "git@example.com:awesome_space/awesome_project.git",
+      "git_http_url": "http://example.com/awesome_space/awesome_project.git",
+      "namespace": "Awesome Space",
+      "visibility_level": 20,
+      "path_with_namespace": "awesome_space/awesome_project",
+      "default_branch": "master",
+      "homepage": "http://example.com/awesome_space/awesome_project",
+      "url": "http://example.com/awesome_space/awesome_project.git",
+      "ssh_url": "git@example.com:awesome_space/awesome_project.git",
+      "http_url": "http://example.com/awesome_space/awesome_project.git"
     },
     "target": {
-      "name":"Awesome Project",
-      "description":"Aut reprehenderit ut est.",
-      "web_url":"http://example.com/awesome_space/awesome_project",
-      "git_ssh_url":"git@example.com:awesome_space/awesome_project.git",
-      "git_http_url":"http://example.com/awesome_space/awesome_project.git",
-      "namespace":"Awesome Space",
-      "visibility_level":20,
-      "path_with_namespace":"awesome_space/awesome_project",
-      "default_branch":"master",
-      "homepage":"http://example.com/awesome_space/awesome_project",
-      "url":"http://example.com/awesome_space/awesome_project.git",
-      "ssh_url":"git@example.com:awesome_space/awesome_project.git",
-      "http_url":"http://example.com/awesome_space/awesome_project.git"
+      "name": "Awesome Project",
+      "description": "Aut reprehenderit ut est.",
+      "web_url": "http://example.com/awesome_space/awesome_project",
+      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
+      "git_ssh_url": "git@example.com:awesome_space/awesome_project.git",
+      "git_http_url": "http://example.com/awesome_space/awesome_project.git",
+      "namespace": "Awesome Space",
+      "visibility_level": 20,
+      "path_with_namespace": "awesome_space/awesome_project",
+      "default_branch": "master",
+      "homepage": "http://example.com/awesome_space/awesome_project",
+      "url": "http://example.com/awesome_space/awesome_project.git",
+      "ssh_url": "git@example.com:awesome_space/awesome_project.git",
+      "http_url": "http://example.com/awesome_space/awesome_project.git"
     },
     "last_commit": {
       "id": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
@@ -82,32 +95,28 @@
         "email": "gitlabdev@dv6700.(none)"
       }
     },
-    "work_in_progress": false,
-    "url": "http://example.com/diaspora/merge_requests/1",
-    "action": "open",
-    "assignee": {
-      "name": "User1",
-      "username": "user1",
-      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
-    }
+    "action": "open"
   },
-   "labels": [{
-    "id": 206,
-    "title": "API",
-    "color": "#ffffff",
-    "project_id": 14,
-    "created_at": "2013-12-03T17:15:43Z",
-    "updated_at": "2013-12-03T17:15:43Z",
-    "template": false,
-    "description": "API related issues",
-    "type": "ProjectLabel",
-    "group_id": 41
-  }],
+  "labels": [
+    {
+      "id": 206,
+      "title": "API",
+      "color": "#ffffff",
+      "project_id": 14,
+      "created_at": "2013-12-03T17:15:43Z",
+      "updated_at": "2013-12-03T17:15:43Z",
+      "template": false,
+      "description": "API related issues",
+      "type": "ProjectLabel",
+      "group_id": 41
+    }
+  ],
   "changes": {
     "author_id": {
        "current":2
     },
     "updated_at": {
+       "previous": "2013-09-15T16:50:55Z",
        "current": "2013-12-03T17:23:34Z"
     },
     "updated_by_id": {
@@ -155,5 +164,21 @@
         "group_id": 41
       }]
     }
-  }
+  },
+  "assignees": [
+    {
+      "id": 6,
+      "name": "User1",
+      "username": "user1",
+      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
+    }
+  ],
+  "reviewers": [
+    {
+      "id": 6,
+      "name": "User1",
+      "username": "user1",
+      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
+    }
+  ]
 }
\ No newline at end of file