diff --git a/src/Microsoft.AspNet.Server.WebListener/project.json b/src/Microsoft.AspNet.Server.WebListener/project.json
index 2951f53f89..591611cf37 100644
--- a/src/Microsoft.AspNet.Server.WebListener/project.json
+++ b/src/Microsoft.AspNet.Server.WebListener/project.json
@@ -35,7 +35,7 @@
         "System.Security.Claims": "1.0.0-*",
         "System.Security.Cryptography.X509Certificates": "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.Text.Encoding.Extensions": "4.0.10.0",
         "System.Threading": "4.0.0.0",
         "System.Threading.Overlapped": "4.0.0.0",
diff --git a/src/Microsoft.Net.Http.Server/project.json b/src/Microsoft.Net.Http.Server/project.json
index cb314b1c30..f9abeb9eea 100644
--- a/src/Microsoft.Net.Http.Server/project.json
+++ b/src/Microsoft.Net.Http.Server/project.json
@@ -32,7 +32,7 @@
         "System.Security.Claims": "1.0.0-*",
         "System.Security.Cryptography.X509Certificates": "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.Text.Encoding.Extensions": "4.0.10.0",
         "System.Threading": "4.0.0.0",
         "System.Threading.Overlapped": "4.0.0.0",
diff --git a/src/Microsoft.Net.WebSockets/project.json b/src/Microsoft.Net.WebSockets/project.json
index b61f880017..8a03bfb293 100644
--- a/src/Microsoft.Net.WebSockets/project.json
+++ b/src/Microsoft.Net.WebSockets/project.json
@@ -27,7 +27,7 @@
                     "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.Text.Encoding.Extensions": "4.0.10.0",
                     "System.Threading": "4.0.0.0",
                     "System.Threading.Overlapped": "4.0.0.0",