diff --git a/samples/ChatSample/project.json b/samples/ChatSample/project.json
index 12dfe09739..7f4b0da42e 100644
--- a/samples/ChatSample/project.json
+++ b/samples/ChatSample/project.json
@@ -30,7 +30,7 @@
     "Microsoft.Extensions.Configuration.Json": "1.2.0-*",
     "Microsoft.Extensions.Configuration.UserSecrets": "1.2.0-*",
     "Microsoft.EntityFrameworkCore.Tools": {
-      "version": "1.2.0-*",
+      "version": "1.1.0-preview4-final",
       "type": "build"
     },
     "Microsoft.Extensions.Logging": "1.2.0-*",
@@ -51,7 +51,7 @@
     "BundlerMinifier.Core": "2.0.238",
     "Microsoft.AspNetCore.Razor.Tools": "1.2.0-*",
     "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-*",
-    "Microsoft.EntityFrameworkCore.Tools.DotNet": "1.2.0-*",
+    "Microsoft.EntityFrameworkCore.Tools.DotNet": "1.1.0-preview4-final",
     "Microsoft.Extensions.SecretManager.Tools": "1.1.0-preview4-final",
     "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
       "version": "1.2.0-*",