diff --git a/Sample-WPF/packages.config b/Sample-WPF/packages.config
index 722b6c0..31cdc6b 100644
--- a/Sample-WPF/packages.config
+++ b/Sample-WPF/packages.config
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Azure.CognitiveServices.Vision.ComputerVision" version="4.0.0" targetFramework="net46" />
   <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net46" />
@@ -46,7 +46,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net46" />
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="net46" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="net46" />
-  <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="net46" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="net46" />
   <package id="System.Threading" version="4.3.0" targetFramework="net46" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net46" />
   <package id="System.Threading.Timer" version="4.3.0" targetFramework="net46" />