diff --git a/AdventOfCode/AdventOfCode.csproj b/AdventOfCode/AdventOfCode.csproj
index 1c3758b..881282f 100644
--- a/AdventOfCode/AdventOfCode.csproj
+++ b/AdventOfCode/AdventOfCode.csproj
@@ -16,9 +16,6 @@
       <Folder Include="Events\2024\InputFiles\" />
     </ItemGroup>
 
-    <ItemGroup>
-      <PackageReference Include="Autofac" Version="9.0.0" />
-    </ItemGroup>
 
     <ItemGroup>
       <None Remove="Events\2024\InputFiles\1.txt" />
diff --git a/AdventOfCode/Program.cs b/AdventOfCode/Program.cs
index f3183db..9631ed2 100644
--- a/AdventOfCode/Program.cs
+++ b/AdventOfCode/Program.cs
@@ -1,24 +1,17 @@
 using System.Diagnostics;
 using System.Reflection;
 using AdventOfCode.Framework;
-using Autofac;
 
-var container = BuildContainer();
-
-var days = container.Resolve<IEnumerable<IDay>>();
+var days = Assembly.GetExecutingAssembly()
+    .GetTypes()
+    .Where(t => t is { IsClass: true, IsAbstract: false } && typeof(IDay).IsAssignableFrom(t))
+    .Select(t => (IDay)Activator.CreateInstance(t)!);
 var day = GetDay();
 Console.WriteLine("Year " + day.Year + " Day " + day.Day);
 var inputPath = $"Events/{day.Year}/InputFiles/{day.Day}.txt";
 DoPart(1, () => day.Part1(inputPath));
 DoPart(2, () => day.Part2(inputPath));
 
-IContainer BuildContainer()
-{
-    var builder = new ContainerBuilder();
-    builder.RegisterAssemblyTypes(Assembly.GetExecutingAssembly()).AsImplementedInterfaces();
-    return builder.Build();
-}
-
 IDay GetDay()
 {
     if (args.Length == 0)