diff --git a/Octokit/Models/Request/OrganizationUpdate.cs b/Octokit/Models/Request/OrganizationUpdate.cs
index c8f8ef36..f188ff70 100644
--- a/Octokit/Models/Request/OrganizationUpdate.cs
+++ b/Octokit/Models/Request/OrganizationUpdate.cs
@@ -36,6 +36,14 @@ namespace Octokit
         /// </summary>
         public string Name { get; set; }
 
+        /// <summary>
+        /// Gets or sets the description of the organization.
+        /// </summary>
+        /// <value>
+        /// The description.
+        /// </value>
+        public string Description { get; set; }
+
         internal string DebuggerDisplay
         {
             get
diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index db08949d..a2a49c57 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -3,6 +3,7 @@
 * Improved: Added ability to create deploy keys that are read only and can only be used to read repository contents and not write to them - via @haacked
 * Improved: Added `Content` property to `NewTreeItem` to allow specifying content for a tree - via @haacked
 * Improved: Added `Description` property to `NewTeam` to allow specifying a description for a team - via @haacked
+* Improved: Added `Description` property to `OrganizationUpdate` to allow specifying a description for an organization - via @haacked
 * Improved: Added `Before` property to `NotificationsRequest` to find notifications updated before a specific time - via @haacked
 * Fixed: Bug that prevented sepecifying a commit message for pull request merges - via @haacked