diff --git a/src/main/java/org/gitlab4j/api/utils/DurationUtils.java b/src/main/java/org/gitlab4j/api/utils/DurationUtils.java
index 9f222cb89d9d8f27d1f2a3641420c4d31de47566..241928c7328aed31b40371ac069bd244428d30eb 100644
--- a/src/main/java/org/gitlab4j/api/utils/DurationUtils.java
+++ b/src/main/java/org/gitlab4j/api/utils/DurationUtils.java
@@ -107,7 +107,7 @@ public class DurationUtils {
             }
 
         } else {
-            buf.append(' ').append(seconds).append('s');
+            buf.append(seconds).append('s');
         }
 
         return (buf.toString());
diff --git a/src/main/java/org/gitlab4j/api/webhook/EventMergeRequest.java b/src/main/java/org/gitlab4j/api/webhook/EventMergeRequest.java
index 970df4ef1dd7b084703fa7d168417d6156c5b9bf..652c73e7a46da6598f2c1250e38a2cade2501733 100644
--- a/src/main/java/org/gitlab4j/api/webhook/EventMergeRequest.java
+++ b/src/main/java/org/gitlab4j/api/webhook/EventMergeRequest.java
@@ -29,6 +29,7 @@ public class EventMergeRequest {
     private String stCommits;
     private String stDiffs;
     private String state;
+    private Long stateId;
     private String targetBranch;
     private Long targetProjectId;
     private String title;
@@ -54,17 +55,20 @@ public class EventMergeRequest {
     private String inProgressMergeCommitSha;
     private Integer lockVersion;
 
-    private Date last_editedAt;
+    private Date lastEditedAt;
     private Long lastEditedById;
     private Long headPipelineId;
     private Boolean refFetched;
     private Long mergeIid;
     private Integer totalTimeSpent;
     private Duration humanTotalTimeSpent;
+    private Integer timeChange;
     private Integer timeEstimate;
     private Duration humanTimeEstimate;
+    private Duration humanTimeChange;
     private List<Long> assigneeIds;
     private List<Long> reviewerIds;
+    private String oldrev;
 
     public Long getAssigneeId() {
         return this.assigneeId;
@@ -218,6 +222,14 @@ public class EventMergeRequest {
         this.state = state;
     }
 
+    public Long getStateId() {
+        return stateId;
+    }
+
+    public void setStateId(Long stateId) {
+        this.stateId = stateId;
+    }
+
     public String getTargetBranch() {
         return this.targetBranch;
     }
@@ -394,12 +406,12 @@ public class EventMergeRequest {
         this.lockVersion = lockVersion;
     }
 
-    public Date getLast_editedAt() {
-        return last_editedAt;
+    public Date getLastEditedAt() {
+        return lastEditedAt;
     }
 
-    public void setLast_editedAt(Date last_editedAt) {
-        this.last_editedAt = last_editedAt;
+    public void setLastEditedAt(Date lastEditedAt) {
+        this.lastEditedAt = lastEditedAt;
     }
 
     public Long getLastEditedById() {
@@ -450,6 +462,14 @@ public class EventMergeRequest {
         this.humanTotalTimeSpent = humanTotalTimeSpent;
     }
 
+    public Integer getTimeChange() {
+        return timeChange;
+    }
+
+    public void setTimeChange(Integer timeChange) {
+        this.timeChange = timeChange;
+    }
+
     public Integer getTimeEstimate() {
         return timeEstimate;
     }
@@ -466,6 +486,14 @@ public class EventMergeRequest {
         this.humanTimeEstimate = humanTimeEstimate;
     }
 
+    public Duration getHumanTimeChange() {
+        return humanTimeChange;
+    }
+
+    public void setHumanTimeChange(Duration humanTimeChange) {
+        this.humanTimeChange = humanTimeChange;
+    }
+
     public List<Long> getAssigneeIds() {
         return assigneeIds;
     }
@@ -482,6 +510,14 @@ public class EventMergeRequest {
         this.reviewerIds = reviewerIds;
     }
 
+    public String getOldrev() {
+        return oldrev;
+    }
+
+    public void setOldrev(String oldrev) {
+        this.oldrev = oldrev;
+    }
+
     @Override
     public String toString() {
         return (JacksonJson.toJsonString(this));
diff --git a/src/test/java/org/gitlab4j/api/TestDuration.java b/src/test/java/org/gitlab4j/api/TestDuration.java
index 071306892bf4c7aed1c0809958b2de40c92cc75f..3c0c45d2369d1d7c3442cd52750a6728d82cf5f1 100644
--- a/src/test/java/org/gitlab4j/api/TestDuration.java
+++ b/src/test/java/org/gitlab4j/api/TestDuration.java
@@ -112,7 +112,10 @@ public class TestDuration {
     @Test
     public void testToString() {
 
-        String duration = DurationUtils.toString(60 + 1);
+        String duration = DurationUtils.toString(5);
+        assertEquals("5s", duration);
+
+        duration = DurationUtils.toString(60 + 1);
         assertEquals("1m1s", duration);
 
         duration = DurationUtils.toString(60 * 60 + 60 + 1);
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 5d9d836d4c117657ecf4e14f7a786a9b290c8516..831d36bfcde7bb479aafb5ac7b38afeec6913157 100644
--- a/src/test/resources/org/gitlab4j/api/merge-request-event.json
+++ b/src/test/resources/org/gitlab4j/api/merge-request-event.json
@@ -112,8 +112,23 @@
         "group_id": 41
       }
     ],
+    "head_pipeline_id": 848574,
+    "last_edited_at": "2014-04-03T17:23:34Z",
+    "last_edited_by_id": 59,
+    "merge_commit_sha": "e3b7e97417fd6318a5c31b21b29d2acc5c86c3ae",
+    "merge_user_id": 59,
+    "merge_when_pipeline_succeeds": false,
+    "state_id": 1,
+    "time_estimate": 0,
+    "updated_by_id": 6,
+    "total_time_spent": 0,
+    "time_change": 0,
+    "human_total_time_spent": "30m",
+    "human_time_change": "30s",
+    "human_time_estimate": "30m",
     "action": "open",
-    "detailed_merge_status": "mergeable"
+    "detailed_merge_status": "mergeable",
+    "oldrev": "8ad9e9f37b007d15c102da002c2a7133a5ca3737"
   },
   "labels": [
     {