diff --git a/MTSC.UnitTests/E2ETests.cs b/MTSC.UnitTests/E2ETests.cs
index c469b1c..9a0b65b 100644
--- a/MTSC.UnitTests/E2ETests.cs
+++ b/MTSC.UnitTests/E2ETests.cs
@@ -1,4 +1,5 @@
 using FluentAssertions;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using MTSC.Common.Http;
@@ -65,8 +66,8 @@ namespace MTSC.UnitTests
                 .AddExceptionHandler(new ExceptionConsoleLogger())
                 .SetScheduler(new ParallelScheduler())
                 .WithSslAuthenticationTimeout(TimeSpan.FromMilliseconds(100));
-            Server.ServiceManager.RegisterSingleton<ILogger, ConsoleLogger>();
-            Server.ServiceManager.RegisterSingleton<IteratingService>();
+            Server.ServiceCollection.AddSingleton<ILogger, ConsoleLogger>();
+            Server.ServiceCollection.AddSingleton<IteratingService>();
             Server.RunAsync();
         }
 
diff --git a/MTSC/MTSC.csproj b/MTSC/MTSC.csproj
index 16c17bf..7d4285f 100644
--- a/MTSC/MTSC.csproj
+++ b/MTSC/MTSC.csproj
@@ -5,13 +5,13 @@
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <ApplicationIcon />
     <StartupObject />
-    <Version>5.4.3</Version>
+    <Version>5.5</Version>
     <LangVersion>latest</LangVersion>
     <Authors>Alexandru-Victor Macocian</Authors>
     <Product>MTSC</Product>
     <Description>Modular TCP Server and Client</Description>
-    <AssemblyVersion>5.4.3.0</AssemblyVersion>
-    <FileVersion>5.4.3.0</FileVersion>
+    <AssemblyVersion>5.5.0.0</AssemblyVersion>
+    <FileVersion>5.5.0.0</FileVersion>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <Platforms>AnyCPU;x64</Platforms>
     <PackageProjectUrl>https://github.com/AlexMacocian/MTSC</PackageProjectUrl>
@@ -27,9 +27,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.2" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
-    <PackageReference Include="Slim" Version="1.7.3" />
+    <PackageReference Include="Slim" Version="1.9.2" />
+    <PackageReference Include="Slim.Integration" Version="1.0.4" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/MTSC/ServerSide/BackgroundServices/BackgroundServicesHolder.cs b/MTSC/ServerSide/BackgroundServices/BackgroundServicesHolder.cs
index 1c562b3..8a83885 100644
--- a/MTSC/ServerSide/BackgroundServices/BackgroundServicesHolder.cs
+++ b/MTSC/ServerSide/BackgroundServices/BackgroundServicesHolder.cs
@@ -1,4 +1,5 @@
-using System;
+using Microsoft.Extensions.DependencyInjection;
+using System;
 using System.Collections.Generic;
 
 namespace MTSC.ServerSide.BackgroundServices
@@ -16,7 +17,7 @@ namespace MTSC.ServerSide.BackgroundServices
         public void RegisterBackgroundService<T>(TimeSpan activationInterval)
             where T : BackgroundServiceBase
         {
-            this.server.ServiceManager.RegisterSingleton<T>();
+            this.server.ServiceCollection.AddSingleton<T>();
             this.backgroundServices.Add(new BackgroundServiceMetadata { ActivationInterval = activationInterval, RegisteredType = typeof(T) });
         }
 
diff --git a/MTSC/ServerSide/Server.cs b/MTSC/ServerSide/Server.cs
index 05a6c5d..aa85c5b 100644
--- a/MTSC/ServerSide/Server.cs
+++ b/MTSC/ServerSide/Server.cs
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
 using MTSC.Common;
 using MTSC.Exceptions;
 using MTSC.ServerSide.BackgroundServices;
@@ -7,6 +8,7 @@ using MTSC.ServerSide.Listeners;
 using MTSC.ServerSide.Schedulers;
 using MTSC.ServerSide.UsageMonitors;
 using Slim;
+using Slim.Integration.ServiceCollection;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -104,9 +106,13 @@ namespace MTSC.ServerSide
         /// </summary>
         public IReadOnlyCollection<ClientData> Clients { get => this.clients.AsReadOnly(); }
         /// <summary>
-        /// <see cref="IServiceManager"/> for configuring and retrieving services.
+        /// <see cref="IServiceManager"/> for configuring and retrieving services. Will be initialized at server startup from the <see cref="ServiceCollection"/>.
         /// </summary>
-        public IServiceManager ServiceManager { get; } = new ServiceManager();
+        public IServiceManager ServiceManager { get; private set; }
+        /// <summary>
+        /// <see cref="IServiceCollection"/> used to create the <see cref="IServiceManager"/> at server startup.
+        /// </summary>
+        public IServiceCollection ServiceCollection { get; } = new ServiceCollection();
         #endregion
         #region Constructors
         /// <summary>
@@ -114,8 +120,7 @@ namespace MTSC.ServerSide
         /// </summary>
         public Server()
         {
-            this.ServiceManager.RegisterServiceManager();
-            this.ServiceManager.RegisterSingleton<Server, Server>(sp => this);
+            this.ServiceCollection.AddSingleton(this);
             this.backgroundServicesHolder = new(this);
         }
         /// <summary>
@@ -125,8 +130,7 @@ namespace MTSC.ServerSide
         public Server(int port)
         {
             this.Port = port;
-            this.ServiceManager.RegisterServiceManager();
-            this.ServiceManager.RegisterSingleton<Server, Server>(sp => this);
+            this.ServiceCollection.AddSingleton(this);
             this.backgroundServicesHolder = new(this);
         }
         /// <summary>
@@ -138,8 +142,7 @@ namespace MTSC.ServerSide
         {
             this.certificate = certificate;
             this.Port = port;
-            this.ServiceManager.RegisterServiceManager();
-            this.ServiceManager.RegisterSingleton<Server, Server>(sp => this);
+            this.ServiceCollection.AddSingleton(this);
             this.backgroundServicesHolder = new(this);
         }
         /// <summary>
@@ -151,8 +154,7 @@ namespace MTSC.ServerSide
         {
             this.IPAddress = ipAddress;
             this.Port = port;
-            this.ServiceManager.RegisterServiceManager();
-            this.ServiceManager.RegisterSingleton<Server, Server>(sp => this);
+            this.ServiceCollection.AddSingleton(this);
             this.backgroundServicesHolder = new(this);
         }
         /// <summary>
@@ -166,97 +168,12 @@ namespace MTSC.ServerSide
             this.certificate = certificate;
             this.Port = port;
             this.IPAddress = ipAddress;
-            this.ServiceManager.RegisterServiceManager();
-            this.ServiceManager.RegisterSingleton<Server, Server>(sp => this);
+            this.ServiceCollection.AddSingleton(this);
             this.backgroundServicesHolder = new(this);
         }
         #endregion
         #region Public Methods
         /// <summary>
-        /// Adds a service with transient lifetime.
-        /// </summary>
-        /// <returns>This server object.</returns>
-        public Server AddTransientService<TInterface, TService>()
-            where TService : TInterface
-            where TInterface : class
-        {
-            this.ServiceManager.RegisterTransient<TInterface, TService>();
-            return this;
-        }
-        /// <summary>
-        /// Adds a service with transient lifetime. Registers the service for all the interfaces it implements.
-        /// </summary>
-        /// <returns>This server object.</returns>
-        public Server AddTransientService<TService>()
-            where TService : class
-        {
-            this.ServiceManager.RegisterTransient<TService>();
-            return this;
-        }
-        /// <summary>
-        /// Adds a service with transient lifetime.
-        /// </summary>
-        /// <returns>This server object.</returns>
-        public Server AddTransientService<TInterface, TService>(Func<Slim.IServiceProvider, TService> serviceFactory)
-            where TService : TInterface
-            where TInterface : class
-        {
-            this.ServiceManager.RegisterTransient<TInterface, TService>(serviceFactory);
-            return this;
-        }
-        /// <summary>
-        /// Adds a service with transient lifetime. Registers the service for all the interfaces it implements.
-        /// </summary>
-        /// <returns>This server object.</returns>
-        public Server AddTransientService<TService>(Func<Slim.IServiceProvider, TService> serviceFactory)
-            where TService : class
-        {
-            this.ServiceManager.RegisterTransient<TService>(serviceFactory);
-            return this;
-        }
-        /// <summary>
-        /// Adds a service with singleton lifetime.
-        /// </summary>
-        /// <returns>This server object.</returns>
-        public Server AddSingletonService<TInterface, TService>()
-            where TService : TInterface
-            where TInterface : class
-        {
-            this.ServiceManager.RegisterSingleton<TInterface, TService>();
-            return this;
-        }
-        /// <summary>
-        /// Adds a service with singleton lifetime. Registers the service for all the interfaces it implements.
-        /// </summary>
-        /// <returns>This server object.</returns>
-        public Server AddSingletonService<TService>()
-            where TService : class
-        {
-            this.ServiceManager.RegisterSingleton<TService>();
-            return this;
-        }
-        /// <summary>
-        /// Adds a service with singleton lifetime.
-        /// </summary>
-        /// <returns>This server object.</returns>
-        public Server AddSingletonService<TInterface, TService>(Func<Slim.IServiceProvider, TService> serviceFactory)
-            where TService : TInterface
-            where TInterface : class
-        {
-            this.ServiceManager.RegisterSingleton<TInterface, TService>(serviceFactory);
-            return this;
-        }
-        /// <summary>
-        /// Adds a service with singleton lifetime. Registers the service for all the interfaces it implements.
-        /// </summary>
-        /// <returns>This server object.</returns>
-        public Server AddSingletonService<TService>(Func<Slim.IServiceProvider, TService> serviceFactory)
-            where TService : class
-        {
-            this.ServiceManager.RegisterSingleton<TService>(serviceFactory);
-            return this;
-        }
-        /// <summary>
         /// Adds a <see cref="BackgroundServiceBase"/> to the server.
         /// </summary>
         /// <param name="interval">Interval between ticks.</param>
@@ -419,16 +336,6 @@ namespace MTSC.ServerSide
             return this;
         }
         /// <summary>
-        /// Gets a required service.
-        /// </summary>
-        /// <typeparam name="T">Type of the service used during registration.</typeparam>
-        /// <returns></returns>
-        public T GetService<T>()
-            where T : class
-        {
-            return this.ServiceManager.GetService<T>();
-        }
-        /// <summary>
         /// Get handler of provided type
         /// </summary>
         /// <typeparam name="T"></typeparam>
@@ -521,6 +428,8 @@ namespace MTSC.ServerSide
                 return;
             }
 
+            this.ServiceManager?.Dispose();
+            this.ServiceManager = this.ServiceCollection.BuildSlimServiceProvider() as IServiceManager;
             this.Listener?.Stop();
             if (this.logger is null)
             {