diff --git a/tutorial/netstd/Client/Client.csproj b/tutorial/netstd/Client/Client.csproj
index 81b503f..10d5040 100644
--- a/tutorial/netstd/Client/Client.csproj
+++ b/tutorial/netstd/Client/Client.csproj
@@ -30,7 +30,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.4" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tutorial/netstd/Server/Server.csproj b/tutorial/netstd/Server/Server.csproj
index 95eabd3..b3ff516 100644
--- a/tutorial/netstd/Server/Server.csproj
+++ b/tutorial/netstd/Server/Server.csproj
@@ -38,7 +38,7 @@
     <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="2.2.1" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.4" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.0" />
   </ItemGroup>
 
 </Project>