diff --git a/MapControl/WPF/MapControl.WPF.csproj b/MapControl/WPF/MapControl.WPF.csproj
index f6059427..e1b59934 100644
--- a/MapControl/WPF/MapControl.WPF.csproj
+++ b/MapControl/WPF/MapControl.WPF.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
 
     <PropertyGroup>
-        <TargetFrameworks>netcoreapp3.0;net462;net48</TargetFrameworks>
+        <TargetFrameworks>netcoreapp3.1;net462;net48</TargetFrameworks>
         <UseWPF>true</UseWPF>
         <RootNamespace>MapControl</RootNamespace>
         <SignAssembly>true</SignAssembly>
@@ -37,11 +37,11 @@
         <Compile Include="..\Shared\*" />
     </ItemGroup>
 
-    <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.0'">
+    <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
         <PackageReference Include="System.Runtime.Caching" Version="4.7.0" />
     </ItemGroup>
 
-    <ItemGroup Condition="'$(TargetFramework)' != 'netcoreapp3.0'">
+    <ItemGroup Condition="'$(TargetFramework)' != 'netcoreapp3.1'">
         <Reference Include="System.Net.Http" />
         <Reference Include="System.Runtime.Caching" />
     </ItemGroup>
diff --git a/SampleApps/WpfCoreApp/WpfCoreApp.csproj b/SampleApps/WpfCoreApp/WpfCoreApp.csproj
index 3b0c437b..76ce8aa7 100644
--- a/SampleApps/WpfCoreApp/WpfCoreApp.csproj
+++ b/SampleApps/WpfCoreApp/WpfCoreApp.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>WinExe</OutputType>
-        <TargetFramework>netcoreapp3.0</TargetFramework>
+        <TargetFramework>netcoreapp3.1</TargetFramework>
         <UseWPF>true</UseWPF>
         <RootNamespace>WpfCoreApp</RootNamespace>
         <Version>4.16.0</Version>