diff --git a/AdapterPattern/AdapterPattern.csproj b/AdapterPattern/AdapterPattern.csproj
index 74abf5c..91b464a 100644
--- a/AdapterPattern/AdapterPattern.csproj
+++ b/AdapterPattern/AdapterPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/BridgePattern/BridgePattern.csproj b/BridgePattern/BridgePattern.csproj
index 74abf5c..91b464a 100644
--- a/BridgePattern/BridgePattern.csproj
+++ b/BridgePattern/BridgePattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/BuilderPattern/BuilderPattern.csproj b/BuilderPattern/BuilderPattern.csproj
index 74abf5c..91b464a 100644
--- a/BuilderPattern/BuilderPattern.csproj
+++ b/BuilderPattern/BuilderPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/ChainOfResponsibilityPattern/ChainOfResponsibilityPattern.csproj b/ChainOfResponsibilityPattern/ChainOfResponsibilityPattern.csproj
index 74abf5c..91b464a 100644
--- a/ChainOfResponsibilityPattern/ChainOfResponsibilityPattern.csproj
+++ b/ChainOfResponsibilityPattern/ChainOfResponsibilityPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/CommandPattern/CommandPattern.csproj b/CommandPattern/CommandPattern.csproj
index 74abf5c..91b464a 100644
--- a/CommandPattern/CommandPattern.csproj
+++ b/CommandPattern/CommandPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/CompositePattern/CompositePattern.csproj b/CompositePattern/CompositePattern.csproj
index 74abf5c..91b464a 100644
--- a/CompositePattern/CompositePattern.csproj
+++ b/CompositePattern/CompositePattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/DecoratorPattern/DecoratorPattern.csproj b/DecoratorPattern/DecoratorPattern.csproj
index 74abf5c..91b464a 100644
--- a/DecoratorPattern/DecoratorPattern.csproj
+++ b/DecoratorPattern/DecoratorPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/DesignPatternsDotNetCore.sln b/DesignPatternsDotNetCore.sln
index 3a7677a..c10a3cc 100644
--- a/DesignPatternsDotNetCore.sln
+++ b/DesignPatternsDotNetCore.sln
@@ -42,6 +42,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ProxyPattern", "ProxyPatter
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SingletonPattern.Tests", "SingletonPattern.Tests\SingletonPattern.Tests.csproj", "{7A21A074-AEBB-4B33-80BA-D7DFBE87A449}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChainOfResponsibilityPattern", "ChainOfResponsibilityPattern\ChainOfResponsibilityPattern.csproj", "{4A278E35-B0F5-4039-8422-671FB22B1F2F}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -292,6 +294,18 @@ Global
 		{7A21A074-AEBB-4B33-80BA-D7DFBE87A449}.Release|x64.Build.0 = Release|Any CPU
 		{7A21A074-AEBB-4B33-80BA-D7DFBE87A449}.Release|x86.ActiveCfg = Release|Any CPU
 		{7A21A074-AEBB-4B33-80BA-D7DFBE87A449}.Release|x86.Build.0 = Release|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Debug|x64.Build.0 = Debug|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Debug|x86.Build.0 = Debug|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Release|x64.ActiveCfg = Release|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Release|x64.Build.0 = Release|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Release|x86.ActiveCfg = Release|Any CPU
+		{4A278E35-B0F5-4039-8422-671FB22B1F2F}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/FacadePattern/FacadePattern.csproj b/FacadePattern/FacadePattern.csproj
index 74abf5c..91b464a 100644
--- a/FacadePattern/FacadePattern.csproj
+++ b/FacadePattern/FacadePattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/FactoryPattern/FactoryPattern.csproj b/FactoryPattern/FactoryPattern.csproj
index 74abf5c..91b464a 100644
--- a/FactoryPattern/FactoryPattern.csproj
+++ b/FactoryPattern/FactoryPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/FlyweightPattern/FlyweightPattern.csproj b/FlyweightPattern/FlyweightPattern.csproj
index 74abf5c..91b464a 100644
--- a/FlyweightPattern/FlyweightPattern.csproj
+++ b/FlyweightPattern/FlyweightPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/IteratorPattern/IteratorPattern.csproj b/IteratorPattern/IteratorPattern.csproj
index 74abf5c..91b464a 100644
--- a/IteratorPattern/IteratorPattern.csproj
+++ b/IteratorPattern/IteratorPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/MediatorPattern/MediatorPattern.csproj b/MediatorPattern/MediatorPattern.csproj
index 74abf5c..91b464a 100644
--- a/MediatorPattern/MediatorPattern.csproj
+++ b/MediatorPattern/MediatorPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/ObserverPattern/ObserverPattern.csproj b/ObserverPattern/ObserverPattern.csproj
index 74abf5c..91b464a 100644
--- a/ObserverPattern/ObserverPattern.csproj
+++ b/ObserverPattern/ObserverPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/PrototypePattern/PrototypePattern.csproj b/PrototypePattern/PrototypePattern.csproj
index 74abf5c..91b464a 100644
--- a/PrototypePattern/PrototypePattern.csproj
+++ b/PrototypePattern/PrototypePattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/ProxyPattern/ProxyPattern.csproj b/ProxyPattern/ProxyPattern.csproj
index 74abf5c..91b464a 100644
--- a/ProxyPattern/ProxyPattern.csproj
+++ b/ProxyPattern/ProxyPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/SingletonPattern.Tests/SingletonPattern.Tests.csproj b/SingletonPattern.Tests/SingletonPattern.Tests.csproj
index ec8a874..d2af2f1 100644
--- a/SingletonPattern.Tests/SingletonPattern.Tests.csproj
+++ b/SingletonPattern.Tests/SingletonPattern.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
 
diff --git a/SingletonPattern/SingletonPattern.csproj b/SingletonPattern/SingletonPattern.csproj
index 74abf5c..91b464a 100644
--- a/SingletonPattern/SingletonPattern.csproj
+++ b/SingletonPattern/SingletonPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/StatePattern/StatePattern.csproj b/StatePattern/StatePattern.csproj
index 74abf5c..91b464a 100644
--- a/StatePattern/StatePattern.csproj
+++ b/StatePattern/StatePattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/StrategyPattern/StrategyPattern.csproj b/StrategyPattern/StrategyPattern.csproj
index 74abf5c..91b464a 100644
--- a/StrategyPattern/StrategyPattern.csproj
+++ b/StrategyPattern/StrategyPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/TemplatePattern/TemplatePattern.csproj b/TemplatePattern/TemplatePattern.csproj
index 74abf5c..91b464a 100644
--- a/TemplatePattern/TemplatePattern.csproj
+++ b/TemplatePattern/TemplatePattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/VisitorPattern/VisitorPattern.csproj b/VisitorPattern/VisitorPattern.csproj
index 74abf5c..91b464a 100644
--- a/VisitorPattern/VisitorPattern.csproj
+++ b/VisitorPattern/VisitorPattern.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>