diff --git a/Patcher/PatchClient/PatchClient.csproj b/Patcher/PatchClient/PatchClient.csproj
index 8f005df..ed2bdbf 100644
--- a/Patcher/PatchClient/PatchClient.csproj
+++ b/Patcher/PatchClient/PatchClient.csproj
@@ -4,8 +4,8 @@
     <TargetFramework>net8.0</TargetFramework>
     <IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>
     <Nullable>enable</Nullable>
-    <AssemblyVersion>2.11.0</AssemblyVersion>
-    <FileVersion>2.11.0</FileVersion>
+    <AssemblyVersion>2.12.0</AssemblyVersion>
+    <FileVersion>2.12.0</FileVersion>
   </PropertyGroup>
   <ItemGroup>
     <AvaloniaResource Include="Assets\**" />
diff --git a/Patcher/PatchGenerator/PatchGenerator.csproj b/Patcher/PatchGenerator/PatchGenerator.csproj
index 1349aa8..f70c910 100644
--- a/Patcher/PatchGenerator/PatchGenerator.csproj
+++ b/Patcher/PatchGenerator/PatchGenerator.csproj
@@ -4,8 +4,8 @@
     <TargetFramework>net8.0</TargetFramework>
     <IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>
     <Nullable>enable</Nullable>
-    <AssemblyVersion>2.11.0</AssemblyVersion>
-    <FileVersion>2.11.0</FileVersion>
+    <AssemblyVersion>2.12.0</AssemblyVersion>
+    <FileVersion>2.12.0</FileVersion>
   </PropertyGroup>
 
   <ItemGroup>
@@ -27,7 +27,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <EmbeddedResource Include="Resources\7za.exe" />
+    <None Remove="Resources\7z.dll" />
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Avalonia" Version="0.10.11" />
diff --git a/Patcher/PatchGenerator/Resources/7za.exe b/Patcher/PatchGenerator/Resources/7za.exe
deleted file mode 100644
index 2bdd57d..0000000
Binary files a/Patcher/PatchGenerator/Resources/7za.exe and /dev/null differ
diff --git a/Patcher/PatchGenerator/Resources/PatchClient.exe b/Patcher/PatchGenerator/Resources/PatchClient.exe
index 33ecaa5..1cb26eb 100644
Binary files a/Patcher/PatchGenerator/Resources/PatchClient.exe and b/Patcher/PatchGenerator/Resources/PatchClient.exe differ
diff --git a/Patcher/PatchGenerator/ViewModels/PatchGenerationViewModel.cs b/Patcher/PatchGenerator/ViewModels/PatchGenerationViewModel.cs
index be5ce67..1d83b55 100644
--- a/Patcher/PatchGenerator/ViewModels/PatchGenerationViewModel.cs
+++ b/Patcher/PatchGenerator/ViewModels/PatchGenerationViewModel.cs
@@ -16,6 +16,7 @@ using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
 using System.Timers;
+using PatcherUtils.Model;
 
 namespace PatchGenerator.ViewModels
 {
@@ -140,12 +141,19 @@ namespace PatchGenerator.ViewModels
 
                     System.Threading.Thread.Sleep(2000);
 
-                    PatchItemCollection.Add(new PatchItem("Kicking off 7zip ..."));
-
-                    LazyOperations.StartZipProcess(generationInfo.PatchName.FromCwd(), $"{generationInfo.PatchName}.zip".FromCwd());
+                    PatchItemCollection.Add(new PatchItem("Zipping patcher ..."));
 
+                    ProgressMessage = "Zipping patcher";
+                    
                     IndeterminateProgress = false;
 
+                    var progress = new Progress<int>(p =>
+                    {
+                        PatchPercent = p;
+                    });
+
+                    LazyOperations.CompressDirectory(generationInfo.PatchName.FromCwd(), $"{generationInfo.PatchName}.7z".FromCwd(), progress);
+
                     PatchItemCollection.Add(new PatchItem("Done"));
                 }
 
diff --git a/Patcher/PatcherUtils/LazyOperations.cs b/Patcher/PatcherUtils/LazyOperations.cs
index 1ff02d6..8c059bf 100644
--- a/Patcher/PatcherUtils/LazyOperations.cs
+++ b/Patcher/PatcherUtils/LazyOperations.cs
@@ -1,7 +1,9 @@
-using PatcherUtils.Model;
-using System.Diagnostics;
+using System;
+using PatcherUtils.Model;
 using System.IO;
 using System.Reflection;
+using Aki.Common.Utils;
+using SevenZip;
 
 namespace PatcherUtils
 {
@@ -18,12 +20,12 @@ namespace PatcherUtils
         /// </summary>
         public static string PatchFolder = "Aki_Patches";
 
-        private static string SevenZExe = "7za.exe";
+        private static string SevenZDll = "7z.dll";
 
         /// <summary>
         /// The path to the 7za.exe file in the <see cref="TempDir"/>
         /// </summary>
-        public static string SevenZExePath = $"{TempDir}\\{SevenZExe}";
+        public static string SevenZDllPath = $"{TempDir}\\{SevenZDll}";
 
         private static string PatcherClient = "PatchClient.exe";
         /// <summary>
@@ -79,9 +81,9 @@ namespace PatcherUtils
             {
                 switch (resource)
                 {
-                    case string a when a.EndsWith(SevenZExe):
+                    case string a when a.EndsWith(SevenZDll):
                         {
-                            StreamResourceOut(assembly, resource, SevenZExePath);
+                            StreamResourceOut(assembly, resource, SevenZDllPath);
                             break;
                         }
                     case string a when a.EndsWith(PatcherClient):
@@ -98,17 +100,34 @@ namespace PatcherUtils
             }
         }
 
-        public static void StartZipProcess(string SourcePath, string DestinationPath)
+        public static void CompressDirectory(string SourceDirectoryPath, string DestinationFilePath, IProgress<int> progress)
         {
-            ProcessStartInfo procInfo = new ProcessStartInfo()
+            var outputFile = new FileInfo(DestinationFilePath);
+            
+            SevenZipBase.SetLibraryPath(SevenZDllPath);
+            var compressor = new SevenZipCompressor()
             {
-                FileName = SevenZExePath,
-                Arguments = $"a -mm=LZMA {DestinationPath} {SourcePath}"
+                ArchiveFormat = OutArchiveFormat.SevenZip,
+                CompressionMethod = CompressionMethod.Lzma2,
+                CompressionLevel = CompressionLevel.Normal
             };
 
-            Process.Start(procInfo);
+            compressor.Compressing += (_, args) =>
+            {
+                progress.Report(args.PercentDone);
+            };
 
-            PatchLogger.LogInfo($"Zip process started");
+            using var outputStream = outputFile.OpenWrite();
+            
+            compressor.CompressDirectory(SourceDirectoryPath, outputStream);
+            
+            outputFile.Refresh();
+
+            // failed to compress data
+            if (!outputFile.Exists || outputFile.Length == 0)
+            {
+                Logger.LogError("Failed to compress patcher");
+            }
         }
 
         /// <summary>
diff --git a/Patcher/PatcherUtils/PatcherUtils.csproj b/Patcher/PatcherUtils/PatcherUtils.csproj
index 57898b3..55ccfb0 100644
--- a/Patcher/PatcherUtils/PatcherUtils.csproj
+++ b/Patcher/PatcherUtils/PatcherUtils.csproj
@@ -11,6 +11,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <EmbeddedResource Include="Resources\7z.dll" />
     <EmbeddedResource Include="Resources\xdelta3.exe" />
   </ItemGroup>
 
@@ -20,4 +21,8 @@
     </Reference>
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Squid-Box.SevenZipSharp" Version="1.6.1.23" />
+  </ItemGroup>
+
 </Project>
diff --git a/Patcher/PatcherUtils/Resources/7z.dll b/Patcher/PatcherUtils/Resources/7z.dll
new file mode 100644
index 0000000..2ba9f27
Binary files /dev/null and b/Patcher/PatcherUtils/Resources/7z.dll differ