diff --git a/src/Microsoft.AspNet.Mvc.Core/project.json b/src/Microsoft.AspNet.Mvc.Core/project.json
index 1daf386a68..e6aaf6769c 100644
--- a/src/Microsoft.AspNet.Mvc.Core/project.json
+++ b/src/Microsoft.AspNet.Mvc.Core/project.json
@@ -51,7 +51,7 @@
         "System.Security.Cryptography.Encryption": "4.0.0.0",
         "System.Security.Cryptography.Hashing.Algorithms": "4.0.0.0",
         "System.Security.Principal": "4.0.0.0",
-        "System.Text.Encoding": "4.0.20.0",
+        "System.Text.Encoding": "4.0.10.0",
         "System.Threading": "4.0.0.0",
         "System.Threading.Tasks": "4.0.10.0",
         "System.Xml.ReaderWriter": "4.0.10.0",
diff --git a/src/Microsoft.AspNet.Mvc.ModelBinding/project.json b/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
index 5f7fd9d743..6f4383c290 100644
--- a/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
+++ b/src/Microsoft.AspNet.Mvc.ModelBinding/project.json
@@ -43,7 +43,7 @@
         "System.Runtime.InteropServices": "4.0.20.0",
         "System.Runtime.Serialization.Primitives": "4.0.0.0",
         "System.Runtime.Serialization.Xml": "4.0.0.0",
-        "System.Text.Encoding": "4.0.20.0",
+        "System.Text.Encoding": "4.0.10.0",
         "System.Text.Encoding.Extensions": "4.0.10.0",
         "System.Threading": "4.0.0.0",
         "System.Threading.Tasks": "4.0.10.0",
diff --git a/src/Microsoft.AspNet.Mvc.Razor/project.json b/src/Microsoft.AspNet.Mvc.Razor/project.json
index a4d0ce4e35..c6c45fcc33 100644
--- a/src/Microsoft.AspNet.Mvc.Razor/project.json
+++ b/src/Microsoft.AspNet.Mvc.Razor/project.json
@@ -43,7 +43,7 @@
         "System.Runtime": "4.0.20.0",
         "System.Runtime.Extensions": "4.0.10.0",
         "System.Runtime.InteropServices": "4.0.20.0",
-        "System.Text.Encoding": "4.0.20.0",
+        "System.Text.Encoding": "4.0.10.0",
         "System.Threading.Tasks": "4.0.10.0"
       }
     }