diff --git a/MaybeErrorTests/MaybeErrorTests.csproj b/MaybeErrorTests/MaybeErrorTests.csproj
index de25c39..88f6a66 100644
--- a/MaybeErrorTests/MaybeErrorTests.csproj
+++ b/MaybeErrorTests/MaybeErrorTests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>