diff --git a/src/Cellm.Tests/Cellm.Tests.csproj b/src/Cellm.Tests/Cellm.Tests.csproj
index 0caee83..54c5c76 100644
--- a/src/Cellm.Tests/Cellm.Tests.csproj
+++ b/src/Cellm.Tests/Cellm.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0-windows</TargetFramework>
+    <TargetFramework>net8.0-windows</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <RollForward>LatestMajor</RollForward>
diff --git a/src/Cellm.Tests/packages.lock.json b/src/Cellm.Tests/packages.lock.json
index af6ee6f..ebffdb9 100644
--- a/src/Cellm.Tests/packages.lock.json
+++ b/src/Cellm.Tests/packages.lock.json
@@ -1,7 +1,7 @@
 {
   "version": 1,
   "dependencies": {
-    "net6.0-windows7.0": {
+    "net8.0-windows7.0": {
       "ExcelDna.Testing": {
         "type": "Direct",
         "requested": "[1.8.0, )",
diff --git a/src/Cellm/Cellm.csproj b/src/Cellm/Cellm.csproj
index f02aba4..126a441 100644
--- a/src/Cellm/Cellm.csproj
+++ b/src/Cellm/Cellm.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0-windows</TargetFramework>
+    <TargetFramework>net8.0-windows</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <RollForward>LatestMajor</RollForward>	  
diff --git a/src/Cellm/packages.lock.json b/src/Cellm/packages.lock.json
index ab2cfa6..ea905e9 100644
--- a/src/Cellm/packages.lock.json
+++ b/src/Cellm/packages.lock.json
@@ -1,7 +1,7 @@
 {
   "version": 1,
   "dependencies": {
-    "net6.0-windows7.0": {
+    "net8.0-windows7.0": {
       "ExcelDna.AddIn": {
         "type": "Direct",
         "requested": "[1.8.0, )",