diff --git a/Katteker/UpdateManager.cs b/Katteker/UpdateManager.cs
index deef65e..2a4f9eb 100644
--- a/Katteker/UpdateManager.cs
+++ b/Katteker/UpdateManager.cs
@@ -10,6 +10,9 @@ using System.Threading.Tasks;
 
 namespace Katteker
 {
+    /// <summary>
+    /// Update manager, which handles the updates.
+    /// </summary>
     public class UpdateManager
     {
         private static readonly string _baseDir = AppDomain.CurrentDomain.BaseDirectory;
@@ -40,6 +43,13 @@ namespace Katteker
         /// </summary>
         public string UrlOrPath => _urlOrPath;
 
+        /// <summary>
+        /// Create the update manager.
+        /// </summary>
+        /// <param name="urlOrPath">path to the publishing directory</param>
+        /// <param name="applicationName">name of the application to update.</param>
+        /// <param name="rootDirectory">root directory.</param>
+        /// <returns>the update manager.</returns>
         public static UpdateManager Create(string urlOrPath = null, string applicationName = null, string rootDirectory = null)
         {
             _config = ReadConfigFile();
@@ -49,6 +59,14 @@ namespace Katteker
             return new UpdateManager(urlOrPath, appName, rootAppDirectory);
         }
 
+        /// <summary>
+        /// Try to create the update manager.
+        /// </summary>
+        /// <param name="manager">update manager</param>
+        /// <param name="urlOrPath">path to the publishing directory</param>
+        /// <param name="applicationName">name of the application to update.</param>
+        /// <param name="rootDirectory">root directory.</param>
+        /// <returns>true if the creation success, false otherwise.</returns>
         public static bool TryCreate(out UpdateManager manager, string urlOrPath = null, string applicationName = null, string rootDirectory = null)
         {
             try
@@ -69,6 +87,11 @@ namespace Katteker
             return updateInfo.ReleasesToApply;
         }
 
+        /// <summary>
+        /// Restart the application.
+        /// </summary>
+        /// <param name="exeToStart"></param>
+        /// <param name="arguments"></param>
         public void RestartApp(string exeToStart = null, string arguments = null)
         {
             exeToStart = exeToStart ?? Path.GetFileName(Assembly.GetEntryAssembly().Location);
@@ -81,6 +104,11 @@ namespace Katteker
             }
         }
 
+        /// <summary>
+        /// Update application.
+        /// </summary>
+        /// <param name="progress">The updating process.</param>
+        /// <returns></returns>
         public async Task<bool> UpdateAppAsync(IProgress<int> progress = null)
         {
             progress?.Report(0);