diff --git a/ExcelAddIn_TableOfContents.csproj b/ExcelAddIn_TableOfContents.csproj
index db2343e..e751e9e 100644
--- a/ExcelAddIn_TableOfContents.csproj
+++ b/ExcelAddIn_TableOfContents.csproj
@@ -33,7 +33,7 @@
     <PublishUrl>\\asyn\web\PlugIn\Excel\</PublishUrl>
     <InstallUrl />
     <TargetCulture>de</TargetCulture>
-    <ApplicationVersion>1.0.0.4</ApplicationVersion>
+    <ApplicationVersion>1.1.0.1</ApplicationVersion>
     <AutoIncrementApplicationRevision>true</AutoIncrementApplicationRevision>
     <UpdateEnabled>true</UpdateEnabled>
     <UpdateInterval>0</UpdateInterval>
@@ -126,6 +126,7 @@
     <Reference Include="Microsoft.Office.Tools.Excel.v4.0.Utilities, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
+    <Reference Include="System.Deployment" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.IO.Compression.FileSystem" />
     <Reference Include="System.Windows.Forms" />
diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
index 4aa9849..b8191d0 100644
--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -33,6 +33,6 @@
 // Sie können alle Werte angeben oder die standardmäßigen Build- und Revisionsnummern 
 // übernehmen, indem Sie "*" eingeben:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("1.1.0.0")]
+[assembly: AssemblyFileVersion("1.1.0.0")]
 
diff --git a/ThisAddIn.cs b/ThisAddIn.cs
index 67c2525..d01061c 100644
--- a/ThisAddIn.cs
+++ b/ThisAddIn.cs
@@ -11,6 +11,7 @@
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Reflection;
+using System.Deployment.Application;
 
 namespace ExcelAddIn_TableOfContents
 {
@@ -141,8 +142,9 @@ private void Update()
                     Properties.Settings.Default.Save();
                 }
 
-                Version a = Assembly.GetExecutingAssembly().GetName().Version;
+                Version a = (ApplicationDeployment.IsNetworkDeployed)? ApplicationDeployment.CurrentDeployment.CurrentVersion : Assembly.GetExecutingAssembly().GetName().Version;
                 Version b = a;
+           
 
                 // once a day should be enougth....
                 if (Settings.Default.LastUpdateCheck.AddHours(1) <= DateTime.Now)
@@ -162,7 +164,7 @@ private void Update()
                             b = new Version(m.Value.Replace("\"", "").Replace("tag_name:v", "").Replace(",", ""));
                         }                       
                     }
-
+                    
                     if (b > a)
                     {