diff --git a/tree/master/cloud/src/solution/AuthWebTestPlugin/packages.config b/tree/master/cloud/src/solution/AuthWebTestPlugin/packages.config
index cc5ae822..8638ddd2 100644
--- a/tree/master/cloud/src/solution/AuthWebTestPlugin/packages.config
+++ b/tree/master/cloud/src/solution/AuthWebTestPlugin/packages.config
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Hyak.Common" version="1.1.0" targetFramework="net452" />
   <package id="Libuv" version="1.9.1" targetFramework="net452" />
@@ -92,7 +92,7 @@
   <package id="System.Runtime.Numerics" version="4.3.0" targetFramework="net452" />
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="net452" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="net452" />
-  <package id="System.Text.Encodings.Web" version="4.3.0" targetFramework="net452" />
+  <package id="System.Text.Encodings.Web" version="4.5.1" targetFramework="net452" />
   <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="net452" />
   <package id="System.Threading" version="4.3.0" targetFramework="net452" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net452" />