diff --git a/webinars & workshops/Developer Workshop 2018/DocumenServiceSample/Helpers/packages.config b/webinars & workshops/Developer Workshop 2018/DocumenServiceSample/Helpers/packages.config
index c2e24dc..1746553 100644
--- a/webinars & workshops/Developer Workshop 2018/DocumenServiceSample/Helpers/packages.config	
+++ b/webinars & workshops/Developer Workshop 2018/DocumenServiceSample/Helpers/packages.config	
@@ -80,7 +80,7 @@
   <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.RegularExpressions" version="4.3.0" targetFramework="net452" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="net452" />
   <package id="System.Threading" version="4.3.0" targetFramework="net452" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net452" />
   <package id="System.Threading.Tasks.Extensions" version="4.3.0" targetFramework="net452" />