diff --git a/AoC2021.csproj b/AoC2021.csproj
index 9590466..e78d5e5 100644
--- a/AoC2021.csproj
+++ b/AoC2021.csproj
@@ -2,7 +2,10 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net5.0</TargetFramework>
+        <TargetFramework>net6.0</TargetFramework>
+        <LangVersion>10</LangVersion>
+        <ImplicitUsings>true</ImplicitUsings>
+        <Nullable>enable</Nullable>
     </PropertyGroup>
 
 </Project>
diff --git a/Day1.cs b/Day1.cs
index 2551062..2303011 100644
--- a/Day1.cs
+++ b/Day1.cs
@@ -1,10 +1,6 @@
 #define Day1
 #if Day1
-using System;
-using System.IO;
-using System.Linq;
-
-var scans = File.ReadAllText("day1/input").Split("\n", StringSplitOptions.RemoveEmptyEntries).Select(l => int.Parse(l)).ToList();
+var scans = File.ReadAllLines("day1/input").Select(int.Parse).ToList();
 Console.WriteLine(Enumerable.Range(1, scans.Count - 1).Count(i => scans[i - 1] < scans[i]));
 Console.WriteLine(Enumerable.Range(3, scans.Count - 3).Count(i => scans[i - 3] < scans[i]));
 #endif
\ No newline at end of file
diff --git a/Day2.cs b/Day2.cs
index 3c18660..0ea7991 100644
--- a/Day2.cs
+++ b/Day2.cs
@@ -1,8 +1,4 @@
 // #define Day2
 #if Day2
-using System;
-using System.IO;
-using System.Linq;
-
-var toBeDefined = File.ReadAllText("day2/input").Split("\n", StringSplitOptions.RemoveEmptyEntries);
+var toBeDefined = File.ReadAllLines("day2/input");
 #endif
\ No newline at end of file
diff --git a/README.md b/README.md
index ce3a07f..af0d725 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Before moving to the next file, comment out the first line again, as only one fi
 
 ### Requirements
 
-C# 9.0 and .NET 5
+C# 10.0 and .NET 6
 
 ### Execute