diff --git a/CSharp/Library/Microsoft.Bot.Builder.Autofac/Microsoft.Bot.Builder.Autofac.2017.csproj b/CSharp/Library/Microsoft.Bot.Builder.Autofac/Microsoft.Bot.Builder.Autofac.2017.csproj
index da3a163e21..699fc5396e 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.Autofac/Microsoft.Bot.Builder.Autofac.2017.csproj
+++ b/CSharp/Library/Microsoft.Bot.Builder.Autofac/Microsoft.Bot.Builder.Autofac.2017.csproj
@@ -22,7 +22,7 @@
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
-    <PackageReference Include="Autofac" Version="4.0.0" />
+    <PackageReference Include="Autofac" Version="4.2.0" />
   </ItemGroup>
 
   <ItemGroup>