diff --git a/NetCoreProject.UnitTests/NetCoreProject.UnitTests.csproj b/NetCoreProject.UnitTests/NetCoreProject.UnitTests.csproj
index e13d0e4..c19363e 100644
--- a/NetCoreProject.UnitTests/NetCoreProject.UnitTests.csproj
+++ b/NetCoreProject.UnitTests/NetCoreProject.UnitTests.csproj
@@ -4,7 +4,7 @@
     <Description>Unit tests for NetCoreProject.</Description>
 
     <!-- Multi-target all frameworks to test, newest first (for VS runner) -->
-    <TargetFrameworks>net8.0</TargetFrameworks>
+    <TargetFrameworks>net9.0</TargetFrameworks>
     <!-- Test older frameworks in CI (to avoid requiring devs to install) -->
     <!--
       TODO: Test opportunistically outside of CI?
diff --git a/NetCoreProject/NetCoreProject.csproj b/NetCoreProject/NetCoreProject.csproj
index 1a80d80..acf439b 100644
--- a/NetCoreProject/NetCoreProject.csproj
+++ b/NetCoreProject/NetCoreProject.csproj
@@ -11,7 +11,7 @@
 
   <PropertyGroup Condition="'$(OutputType)'=='Exe'">
     <!-- Need a "concrete" framework (i.e. not netstandard) for Exe -->
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
 
     <!-- Configure class with Main method entry point -->
     <StartupObject>NetCoreProject.Program</StartupObject>