diff --git a/src/GitLabApiClient/Models/Issues/Responses/ClosedBy.cs b/src/GitLabApiClient/Models/Issues/Responses/ClosedBy.cs
new file mode 100644
index 00000000..887f21de
--- /dev/null
+++ b/src/GitLabApiClient/Models/Issues/Responses/ClosedBy.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Newtonsoft.Json;
+
+namespace GitLabApiClient.Models.Issues.Responses
+{
+    public sealed class ClosedBy : ModifiableObject
+    {
+        [JsonProperty("active")]
+        public string State;
+
+        [JsonProperty("web_url")]
+        public string WebUrl;
+
+        [JsonProperty("avatar_url")]
+        public string AvatarUrl;
+
+        [JsonProperty("username")]
+        public string Username;
+
+        [JsonProperty("id")]
+        public string Id;
+
+        [JsonProperty("name")]
+        public string Name;
+    }
+}
diff --git a/src/GitLabApiClient/Models/Issues/Responses/Issue.cs b/src/GitLabApiClient/Models/Issues/Responses/Issue.cs
index ae7eff55..4e234bb3 100644
--- a/src/GitLabApiClient/Models/Issues/Responses/Issue.cs
+++ b/src/GitLabApiClient/Models/Issues/Responses/Issue.cs
@@ -38,7 +38,7 @@ public sealed class Issue : ModifiableObject
         public DateTime? ClosedAt { get; set; }
 
         [JsonProperty("closed_by")]
-        public string ClosedBy { get; set; }
+        public ClosedBy ClosedBy { get; set; }
 
         [JsonProperty("title")]
         public string Title { get; set; }
diff --git a/src/GitLabApiClient/Models/MergeRequests/Responses/MergeRequest.cs b/src/GitLabApiClient/Models/MergeRequests/Responses/MergeRequest.cs
index a24c0d8c..c757b695 100644
--- a/src/GitLabApiClient/Models/MergeRequests/Responses/MergeRequest.cs
+++ b/src/GitLabApiClient/Models/MergeRequests/Responses/MergeRequest.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using GitLabApiClient.Models.Issues.Responses;
 using GitLabApiClient.Models.Milestones.Responses;
 using Newtonsoft.Json;
 
@@ -62,7 +63,7 @@ public sealed class MergeRequest : ModifiableObject
         public DateTime? ClosedAt { get; set; }
 
         [JsonProperty("closed_by")]
-        public string ClosedBy { get; set; }
+        public ClosedBy ClosedBy { get; set; }
 
         [JsonProperty("target_branch")]
         public string TargetBranch { get; set; }