diff --git a/fsharp-core/GildedRose.ApprovalTests/GildedRose.ApprovalTests.fsproj b/fsharp-core/GildedRose.ApprovalTests/GildedRose.ApprovalTests.fsproj
index f26f9caa..02787bbe 100644
--- a/fsharp-core/GildedRose.ApprovalTests/GildedRose.ApprovalTests.fsproj
+++ b/fsharp-core/GildedRose.ApprovalTests/GildedRose.ApprovalTests.fsproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
@@ -14,9 +14,9 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
-    <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
@@ -27,7 +27,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Update="FSharp.Core" Version="6.0.1" />
+    <PackageReference Update="FSharp.Core" Version="9.0.202" />
   </ItemGroup>
 
 </Project>
diff --git a/fsharp-core/GildedRose.UnitTests/GildedRose.UnitTests.fsproj b/fsharp-core/GildedRose.UnitTests/GildedRose.UnitTests.fsproj
index 9617805b..53f7981f 100644
--- a/fsharp-core/GildedRose.UnitTests/GildedRose.UnitTests.fsproj
+++ b/fsharp-core/GildedRose.UnitTests/GildedRose.UnitTests.fsproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
@@ -11,10 +11,10 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
-    <PackageReference Include="Unquote" Version="6.1.0" />
-    <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+    <PackageReference Include="Unquote" Version="7.0.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
@@ -25,7 +25,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Update="FSharp.Core" Version="6.0.1" />
+    <PackageReference Update="FSharp.Core" Version="9.0.202" />
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 </Project>
diff --git a/fsharp-core/GildedRose/GildedRose.fsproj b/fsharp-core/GildedRose/GildedRose.fsproj
index f3235211..6a5e7449 100644
--- a/fsharp-core/GildedRose/GildedRose.fsproj
+++ b/fsharp-core/GildedRose/GildedRose.fsproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Update="FSharp.Core" Version="6.0.1" />
+    <PackageReference Update="FSharp.Core" Version="9.0.202" />
   </ItemGroup>
 
 </Project>