diff --git a/src/Microsoft.Net.Http.Server/project.json b/src/Microsoft.Net.Http.Server/project.json
index 12ac27494a..bbcef72d03 100644
--- a/src/Microsoft.Net.Http.Server/project.json
+++ b/src/Microsoft.Net.Http.Server/project.json
@@ -29,11 +29,13 @@
         "System.IO": "4.1.0-*",
         "System.IO.FileSystem": "4.0.1-*",
         "System.Net.Primitives": "4.0.11-*",
+        "System.Runtime.Extensions": "4.1.0-*",
         "System.Runtime.InteropServices": "4.1.0-*",
         "System.Security.Claims": "4.0.1-*",
         "System.Security.Cryptography.X509Certificates": "4.1.0-*",
         "System.Security.Principal.Windows": "4.0.0-*",
         "System.Text.Encoding.Extensions": "4.0.11-*",
+        "System.Threading": "4.0.11-*",
         "System.Threading.Overlapped": "4.0.1-*"
       },
       "imports": [