diff --git a/SimpleDnsCrypt/Helper/PatchHelper.cs b/SimpleDnsCrypt/Helper/PatchHelper.cs
new file mode 100644
index 00000000..a5eefd00
--- /dev/null
+++ b/SimpleDnsCrypt/Helper/PatchHelper.cs
@@ -0,0 +1,23 @@
+namespace SimpleDnsCrypt.Helper
+{
+	/// <summary>
+	/// Class to update the configuration file. 
+	/// </summary>
+	public static class PatchHelper
+	{
+		public static bool Patch()
+        {
+            var version = VersionHelper.PublishVersion;
+			if (!DnscryptProxyConfigurationManager.LoadConfiguration()) return false;
+			if (version.Equals("0.6.5"))
+            {
+				//added: netprobe_address = '255.255.255.0:53'
+				//changed: netprobe_timeout = 0
+				DnscryptProxyConfigurationManager.DnscryptProxyConfiguration.netprobe_address = "255.255.255.0:53";
+				DnscryptProxyConfigurationManager.DnscryptProxyConfiguration.netprobe_timeout = 0;
+				return DnscryptProxyConfigurationManager.SaveConfiguration();
+            }
+			return false;
+        }
+	}
+}
diff --git a/SimpleDnsCrypt/SimpleDnsCrypt.csproj b/SimpleDnsCrypt/SimpleDnsCrypt.csproj
index 27d4ee2e..807a6559 100644
--- a/SimpleDnsCrypt/SimpleDnsCrypt.csproj
+++ b/SimpleDnsCrypt/SimpleDnsCrypt.csproj
@@ -182,6 +182,7 @@
     <Compile Include="Helper\LocalNetworkInterfaceManager.cs" />
     <Compile Include="Helper\LogManagerHelper.cs" />
     <Compile Include="Helper\NavigationService.cs" />
+    <Compile Include="Helper\PatchHelper.cs" />
     <Compile Include="Helper\PrerequisiteHelper.cs" />
     <Compile Include="Helper\ValidationHelper.cs" />
     <Compile Include="Helper\VersionHelper.cs" />
diff --git a/SimpleDnsCrypt/ViewModels/LoaderViewModel.cs b/SimpleDnsCrypt/ViewModels/LoaderViewModel.cs
index 21d6c41c..44513715 100644
--- a/SimpleDnsCrypt/ViewModels/LoaderViewModel.cs
+++ b/SimpleDnsCrypt/ViewModels/LoaderViewModel.cs
@@ -168,6 +168,11 @@ private async void InitializeApplication()
 							File.Move(configFile, configFile + ".bak");
 						}
 						File.Move(tmpConfigPath, configFile);
+						// update the configuration file
+						if (PatchHelper.Patch())
+						{
+							await Task.Delay(500).ConfigureAwait(false);
+						}
 					}
 				}