diff --git a/TransientRESTPollyWithCircuitBreaker/TodoREST/packages.config b/TransientRESTPollyWithCircuitBreaker/TodoREST/packages.config
index 2c1ec5f..8ecbf21 100644
--- a/TransientRESTPollyWithCircuitBreaker/TodoREST/packages.config
+++ b/TransientRESTPollyWithCircuitBreaker/TodoREST/packages.config
@@ -33,7 +33,7 @@
   <package id="System.Runtime.Numerics" version="4.3.0" targetFramework="portable46-net451+win81+wpa81" />
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="portable46-net451+win81+wpa81" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="portable46-net451+win81+wpa81" />
-  <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="portable46-net451+win81+wpa81" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="portable46-net451+win81+wpa81" />
   <package id="System.Threading" version="4.3.0" targetFramework="portable46-net451+win81+wpa81" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="portable46-net451+win81+wpa81" />
   <package id="System.Threading.Timer" version="4.3.0" targetFramework="portable46-net451+win81+wpa81" />