diff --git a/src/Microsoft.Identity.Web/TokenAcquisition.cs b/src/Microsoft.Identity.Web/TokenAcquisition.cs
index 010e0f525..89f7f0de3 100644
--- a/src/Microsoft.Identity.Web/TokenAcquisition.cs
+++ b/src/Microsoft.Identity.Web/TokenAcquisition.cs
@@ -25,6 +25,7 @@
 using Microsoft.Extensions.Primitives;
 using Microsoft.Identity.Client;
 using Microsoft.Identity.Web.TokenCacheProviders;
+using Microsoft.Identity.Web.TokenCacheProviders.InMemory;
 using Microsoft.IdentityModel.JsonWebTokens;
 using Microsoft.IdentityModel.Tokens;
 using Microsoft.Net.Http.Headers;