diff --git a/Lesson_5/Task_1/Interfaces/ICopyDirectory.cs b/Lesson_5/Task_1/Interfaces/ICopyDirectory.cs
index 81d7c3b..bb31be9 100644
--- a/Lesson_5/Task_1/Interfaces/ICopyDirectory.cs
+++ b/Lesson_5/Task_1/Interfaces/ICopyDirectory.cs
@@ -2,5 +2,5 @@ namespace Lesson5.Interfaces;
 
 public interface ICopyDirectory
 {
-    public static abstract void Copy(string sourceDir, string destinationDir, bool recursive);
+    static void Copy(string sourceDir, string destinationDir, bool recursive) => throw new NotImplementedException();
 }
diff --git a/Lesson_5/Task_1/Interfaces/IFileInfoOperation.cs b/Lesson_5/Task_1/Interfaces/IFileInfoOperation.cs
index cf799e8..32fdae8 100644
--- a/Lesson_5/Task_1/Interfaces/IFileInfoOperation.cs
+++ b/Lesson_5/Task_1/Interfaces/IFileInfoOperation.cs
@@ -2,5 +2,5 @@ namespace Lesson5.Interfaces;
 
 public interface IFileInfoOperation
 {
-    public static abstract void GetFileInfo(string path);
+    static void GetFileInfo(string path) => throw new NotImplementedException();
 }
diff --git a/Lesson_5/Task_1/Interfaces/IReadFile.cs b/Lesson_5/Task_1/Interfaces/IReadFile.cs
index fdd429f..f4efa57 100644
--- a/Lesson_5/Task_1/Interfaces/IReadFile.cs
+++ b/Lesson_5/Task_1/Interfaces/IReadFile.cs
@@ -2,5 +2,5 @@ namespace Lesson5.Interfaces;
 
 public interface IReadFile
 {
-    public static abstract void ReadByPath(string path);
+    static void ReadByPath(string path) => throw new NotImplementedException();
 }
diff --git a/Lesson_5/Task_1/Interfaces/IUserInput.cs b/Lesson_5/Task_1/Interfaces/IUserInput.cs
index 10e579a..622883b 100644
--- a/Lesson_5/Task_1/Interfaces/IUserInput.cs
+++ b/Lesson_5/Task_1/Interfaces/IUserInput.cs
@@ -2,5 +2,5 @@ namespace Lesson5.Interfaces;
 
 public interface IUserInput
 {
-    public static abstract string AskStringInput(string prompt);
+    static string AskStringInput(string prompt) => throw new NotImplementedException();
 }
diff --git a/Lesson_5/Task_1/Interfaces/IWorkWithFileSystem.cs b/Lesson_5/Task_1/Interfaces/IWorkWithFileSystem.cs
index c09cbaa..30a0bf9 100644
--- a/Lesson_5/Task_1/Interfaces/IWorkWithFileSystem.cs
+++ b/Lesson_5/Task_1/Interfaces/IWorkWithFileSystem.cs
@@ -2,6 +2,6 @@ namespace Lesson5.Interfaces;
 
 public interface IWorkWithFileSystem
 {
-    public static abstract void GetDirectoryFiles(string path);
-    public static abstract string Cd(string name, string current);
+    static void GetDirectoryFiles(string path) => throw new NotImplementedException();
+    static string Cd(string name, string current) => throw new NotImplementedException();
 }
diff --git a/Lesson_5/Task_1/Task_1.csproj b/Lesson_5/Task_1/Task_1.csproj
index f02677b..74abf5c 100644
--- a/Lesson_5/Task_1/Task_1.csproj
+++ b/Lesson_5/Task_1/Task_1.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>