diff --git a/src/UriBuilder.Fluent/project.json b/src/UriBuilder.Fluent/project.json
index b57b499..e7196e3 100644
--- a/src/UriBuilder.Fluent/project.json
+++ b/src/UriBuilder.Fluent/project.json
@@ -26,6 +26,7 @@
     },
     "net40": {
       "imports": "dnxcore50"
-    }
+    },
+    "net45":{}
   }
 }