diff --git a/tests/Library.Fuzz/Library.Fuzz.csproj b/tests/Library.Fuzz/Library.Fuzz.csproj
index 0eabf4d..e1dbfbd 100644
--- a/tests/Library.Fuzz/Library.Fuzz.csproj
+++ b/tests/Library.Fuzz/Library.Fuzz.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>disable</Nullable>
   </PropertyGroup>
diff --git a/tests/Library.LibFuzzer/Library.LibFuzzer.csproj b/tests/Library.LibFuzzer/Library.LibFuzzer.csproj
index 0eabf4d..e1dbfbd 100644
--- a/tests/Library.LibFuzzer/Library.LibFuzzer.csproj
+++ b/tests/Library.LibFuzzer/Library.LibFuzzer.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>disable</Nullable>
   </PropertyGroup>
diff --git a/tests/Library/Library.csproj b/tests/Library/Library.csproj
index de191f5..f5fda80 100644
--- a/tests/Library/Library.csproj
+++ b/tests/Library/Library.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>disable</Nullable>
   </PropertyGroup>