diff --git a/src/Microsoft.AspNetCore.Razor.Runtime/project.json b/src/Microsoft.AspNetCore.Razor.Runtime/project.json
index 73d9653645..4c29e42e13 100644
--- a/src/Microsoft.AspNetCore.Razor.Runtime/project.json
+++ b/src/Microsoft.AspNetCore.Razor.Runtime/project.json
@@ -55,6 +55,7 @@
     "netstandard1.5": {
       "dependencies": {
         "System.Collections.Concurrent": "4.0.12-*",
+        "System.IO.FileSystem": "4.0.1-*",
         "System.Reflection": "4.1.0-*",
         "System.Reflection.Extensions": "4.0.1-*",
         "System.Reflection.TypeExtensions": "4.1.0-*",
diff --git a/src/Microsoft.AspNetCore.Razor/project.json b/src/Microsoft.AspNetCore.Razor/project.json
index cf0a34f480..39375f4b77 100644
--- a/src/Microsoft.AspNetCore.Razor/project.json
+++ b/src/Microsoft.AspNetCore.Razor/project.json
@@ -31,7 +31,6 @@
     "netstandard1.3": {
       "dependencies": {
         "System.Diagnostics.Debug": "4.0.11-*",
-        "System.IO.FileSystem": "4.0.1-*",
         "System.Linq": "4.1.0-*",
         "System.Resources.ResourceManager": "4.0.1-*",
         "System.Runtime.Extensions": "4.1.0-*",