diff --git a/src/Microsoft.AspNetCore.Server.IISIntegration/AuthenticationHandler.cs b/src/Microsoft.AspNetCore.Server.IISIntegration/AuthenticationHandler.cs
index 050b40e283..30905d4149 100644
--- a/src/Microsoft.AspNetCore.Server.IISIntegration/AuthenticationHandler.cs
+++ b/src/Microsoft.AspNetCore.Server.IISIntegration/AuthenticationHandler.cs
@@ -8,7 +8,6 @@ using System.Security.Principal;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Http;
-using Microsoft.Extensions.Internal;
 using Microsoft.Extensions.Primitives;
 
 namespace Microsoft.AspNetCore.Server.IISIntegration
@@ -63,20 +62,20 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         {
             // We would normally set the www-authenticate header here, but IIS does that for us.
             _context.Response.StatusCode = 401;
-            return TaskCache.CompletedTask;
+            return Task.CompletedTask;
         }
 
         public Task ForbidAsync(AuthenticationProperties properties)
         {
             _context.Response.StatusCode = 403;
-            return TaskCache.CompletedTask;
+            return Task.CompletedTask;
         }
 
         public Task InitializeAsync(AuthenticationScheme scheme, HttpContext context)
         {
             Scheme = scheme;
             _context = context;
-            return TaskCache.CompletedTask;
+            return Task.CompletedTask;
         }
 
         public Task SignInAsync(ClaimsPrincipal user, AuthenticationProperties properties)
@@ -86,7 +85,7 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
 
         public Task SignOutAsync(AuthenticationProperties properties)
         {
-            return TaskCache.CompletedTask;
+            return Task.CompletedTask;
         }
     }
 }
diff --git a/src/Microsoft.AspNetCore.Server.IISIntegration/Microsoft.AspNetCore.Server.IISIntegration.csproj b/src/Microsoft.AspNetCore.Server.IISIntegration/Microsoft.AspNetCore.Server.IISIntegration.csproj
index b9bce3b967..e99000b1a5 100644
--- a/src/Microsoft.AspNetCore.Server.IISIntegration/Microsoft.AspNetCore.Server.IISIntegration.csproj
+++ b/src/Microsoft.AspNetCore.Server.IISIntegration/Microsoft.AspNetCore.Server.IISIntegration.csproj
@@ -19,7 +19,6 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.SecurityHelper.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.Extensions.TaskCache.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="System.Security.Principal.Windows" Version="$(CoreFxVersion)" />
   </ItemGroup>