diff --git a/CalDavSynchronizer.Setup/CalDavSynchronizer.Setup.vdproj b/CalDavSynchronizer.Setup/CalDavSynchronizer.Setup.vdproj
index 7bd62782..04be01bc 100644
--- a/CalDavSynchronizer.Setup/CalDavSynchronizer.Setup.vdproj
+++ b/CalDavSynchronizer.Setup/CalDavSynchronizer.Setup.vdproj
@@ -2342,9 +2342,14 @@
             {
             "AssemblyRegister" = "3:1"
             "AssemblyIsInGAC" = "11:FALSE"
-            "AssemblyAsmDisplayName" = "8:Thought.vCards, Version=4.0.0.0, Culture=neutral, processorArchitecture=MSIL"
+            "AssemblyAsmDisplayName" = "8:Thought.vCards, Version=4.1.0.0, Culture=neutral, processorArchitecture=MSIL"
                 "ScatterAssemblies"
                 {
+                    "_04BB107B710AA4CBA634C0FA3600BF12"
+                    {
+                    "Name" = "8:Thought.vCards.dll"
+                    "Attributes" = "3:512"
+                    }
                 }
             "SourcePath" = "8:Thought.vCards.dll"
             "TargetName" = "8:"
@@ -5311,9 +5316,14 @@
             {
             "AssemblyRegister" = "3:1"
             "AssemblyIsInGAC" = "11:FALSE"
-            "AssemblyAsmDisplayName" = "8:CalDavSynchronizer.Conversions, Version=4.0.0.0, Culture=neutral, processorArchitecture=MSIL"
+            "AssemblyAsmDisplayName" = "8:CalDavSynchronizer.Conversions, Version=4.1.0.0, Culture=neutral, processorArchitecture=MSIL"
                 "ScatterAssemblies"
                 {
+                    "_B1C251441D6092D5AEEE36F6909587C8"
+                    {
+                    "Name" = "8:CalDavSynchronizer.Conversions.dll"
+                    "Attributes" = "3:512"
+                    }
                 }
             "SourcePath" = "8:CalDavSynchronizer.Conversions.dll"
             "TargetName" = "8:"
@@ -5616,9 +5626,14 @@
             {
             "AssemblyRegister" = "3:1"
             "AssemblyIsInGAC" = "11:FALSE"
-            "AssemblyAsmDisplayName" = "8:CalDavSynchronizer.OAuth.Swisscom, Version=4.0.0.0, Culture=neutral, processorArchitecture=MSIL"
+            "AssemblyAsmDisplayName" = "8:CalDavSynchronizer.OAuth.Swisscom, Version=4.1.0.0, Culture=neutral, processorArchitecture=MSIL"
                 "ScatterAssemblies"
                 {
+                    "_C147D8BE91EA133BBF35A4265AD6E7C4"
+                    {
+                    "Name" = "8:CalDavSynchronizer.OAuth.Swisscom.dll"
+                    "Attributes" = "3:512"
+                    }
                 }
             "SourcePath" = "8:CalDavSynchronizer.OAuth.Swisscom.dll"
             "TargetName" = "8:"
@@ -6510,9 +6525,14 @@
             {
             "AssemblyRegister" = "3:1"
             "AssemblyIsInGAC" = "11:FALSE"
-            "AssemblyAsmDisplayName" = "8:CalDavSynchronizer.OAuth.Google, Version=4.0.0.0, Culture=neutral, processorArchitecture=MSIL"
+            "AssemblyAsmDisplayName" = "8:CalDavSynchronizer.OAuth.Google, Version=4.1.0.0, Culture=neutral, processorArchitecture=MSIL"
                 "ScatterAssemblies"
                 {
+                    "_E8BFD262316C23666C9E3094B8635548"
+                    {
+                    "Name" = "8:CalDavSynchronizer.OAuth.Google.dll"
+                    "Attributes" = "3:512"
+                    }
                 }
             "SourcePath" = "8:CalDavSynchronizer.OAuth.Google.dll"
             "TargetName" = "8:"
@@ -6722,9 +6742,14 @@
             {
             "AssemblyRegister" = "3:1"
             "AssemblyIsInGAC" = "11:FALSE"
-            "AssemblyAsmDisplayName" = "8:GenSync, Version=4.0.0.0, Culture=neutral, processorArchitecture=MSIL"
+            "AssemblyAsmDisplayName" = "8:GenSync, Version=4.1.0.0, Culture=neutral, processorArchitecture=MSIL"
                 "ScatterAssemblies"
                 {
+                    "_F5E7FDF04E965A59AC2244FBC6EF4BD0"
+                    {
+                    "Name" = "8:GenSync.dll"
+                    "Attributes" = "3:512"
+                    }
                 }
             "SourcePath" = "8:GenSync.dll"
             "TargetName" = "8:"
@@ -7117,15 +7142,15 @@
         {
         "Name" = "8:Microsoft Visual Studio"
         "ProductName" = "8:CalDavSynchronizer"
-        "ProductCode" = "8:{A2B8E419-39E8-4BB4-A691-FF497FB22D58}"
-        "PackageCode" = "8:{C4B5C092-E7C2-4228-8D1B-1CA480F03EC8}"
+        "ProductCode" = "8:{49095927-B008-491C-9D9C-ADE67AAC52A7}"
+        "PackageCode" = "8:{478B2AD4-D332-4403-B504-BAA6589BDEA3}"
         "UpgradeCode" = "8:{691063F4-DD9A-4264-948D-3FBD2565572C}"
         "AspNetVersion" = "8:4.0.30319.0"
         "RestartWWWService" = "11:FALSE"
         "RemovePreviousVersions" = "11:TRUE"
         "DetectNewerInstalledVersion" = "11:TRUE"
         "InstallAllUsers" = "11:FALSE"
-        "ProductVersion" = "8:4.0.0"
+        "ProductVersion" = "8:4.1.0"
         "Manufacturer" = "8:Gerhard Zehetbauer"
         "ARPHELPTELEPHONE" = "8:"
         "ARPHELPLINK" = "8:"
diff --git a/CalDavSynchronizer/Properties/AssemblyInfoVersion.cs b/CalDavSynchronizer/Properties/AssemblyInfoVersion.cs
index c9c2a744..9b60e343 100644
--- a/CalDavSynchronizer/Properties/AssemblyInfoVersion.cs
+++ b/CalDavSynchronizer/Properties/AssemblyInfoVersion.cs
@@ -32,4 +32,4 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion ("4.0.0.0")]
\ No newline at end of file
+[assembly: AssemblyVersion ("4.1.0.0")]
\ No newline at end of file
diff --git a/README.md b/README.md
index 6622e972..170b4a3f 100644
--- a/README.md
+++ b/README.md
@@ -121,6 +121,16 @@ We recommend updating to the latest .Net Framework but the minimal required vers
 
 ### Changelog ###
 
+#### 4.1.0 ####
+- Released 2021/05/12
+- New features
+	- New Addressbook Profile handling for Profile Type Swisscom.
+	- Use Google oauth library for authentication in Swisscom profile.
+	- Update Google NuGet libraries.
+- Bug fixes
+	- Set CurrentUICulture in CompontentContainer startup to avoid issues where Localization didn't work in some dialogs, e.g. github issue 241.
+	- Improve naive string handling in vcard parser library, fixed performance issues when syncing large pictures, github isse 299.
+
 #### 4.0.0 ####
 - Released 2020/11/30
 - **WARNING**: This release is a major upgrade and needs .NET framework 4.8 as minimal requirement. Automatic upgrade won't work if you still have only .NET framework 4.6.1 installed. Install and upgrade manually in that case!