diff --git a/Ch1Duck/Ch1Duck.csproj b/Ch1Duck/Ch1Duck.csproj
index 46e6c92..5726a99 100644
--- a/Ch1Duck/Ch1Duck.csproj
+++ b/Ch1Duck/Ch1Duck.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net9.0</TargetFramework>
+        <TargetFramework>net10.0</TargetFramework>
         <LangVersion>latestmajor</LangVersion>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
diff --git a/Ch2Weather/Ch2Weather.csproj b/Ch2Weather/Ch2Weather.csproj
index 46e6c92..5726a99 100644
--- a/Ch2Weather/Ch2Weather.csproj
+++ b/Ch2Weather/Ch2Weather.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net9.0</TargetFramework>
+        <TargetFramework>net10.0</TargetFramework>
         <LangVersion>latestmajor</LangVersion>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
diff --git a/Ch3Beverage/Ch3Beverage.csproj b/Ch3Beverage/Ch3Beverage.csproj
index 46e6c92..5726a99 100644
--- a/Ch3Beverage/Ch3Beverage.csproj
+++ b/Ch3Beverage/Ch3Beverage.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net9.0</TargetFramework>
+        <TargetFramework>net10.0</TargetFramework>
         <LangVersion>latestmajor</LangVersion>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
diff --git a/Ch4PizzaStore/Ch4PizzaStore.csproj b/Ch4PizzaStore/Ch4PizzaStore.csproj
index 46e6c92..5726a99 100644
--- a/Ch4PizzaStore/Ch4PizzaStore.csproj
+++ b/Ch4PizzaStore/Ch4PizzaStore.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net9.0</TargetFramework>
+        <TargetFramework>net10.0</TargetFramework>
         <LangVersion>latestmajor</LangVersion>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
diff --git a/global.json b/global.json
new file mode 100644
index 0000000..a11f48e
--- /dev/null
+++ b/global.json
@@ -0,0 +1,7 @@
+{
+  "sdk": {
+    "version": "10.0.0",
+    "rollForward": "latestMajor",
+    "allowPrerelease": true
+  }
+}
\ No newline at end of file