diff --git a/Src/WebChatHost/WebChatHost.csproj b/Src/WebChatHost/WebChatHost.csproj
index 19b84b1..3acaeba 100644
--- a/Src/WebChatHost/WebChatHost.csproj
+++ b/Src/WebChatHost/WebChatHost.csproj
@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="BuildBundlerMinifier" Version="2.8.391" />
-    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.1.5" />
+    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.1.15" />
     <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.AzureAD.UI" Version="2.1.1" />
     <PackageReference Include="Microsoft.Bot.Builder" Version="4.1.5" />