diff --git a/client/Ntreev.Crema.ApplicationHost/packages.config b/client/Ntreev.Crema.ApplicationHost/packages.config
index 8aa1ef363..8a100fc5a 100644
--- a/client/Ntreev.Crema.ApplicationHost/packages.config
+++ b/client/Ntreev.Crema.ApplicationHost/packages.config
@@ -38,7 +38,7 @@ Sample license text.
   <package id="System.Runtime.Numerics" version="4.3.0" targetFramework="net45" />
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="net45" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="net45" />
-  <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="net45" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="net45" />
   <package id="System.Threading" version="4.3.0" targetFramework="net45" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net45" />
   <package id="System.Xml.ReaderWriter" version="4.3.0" targetFramework="net45" />