diff --git a/src/Our.Umbraco.IoC.LightInject4/packages.config b/src/Our.Umbraco.IoC.LightInject4/packages.config
index 106113c..1376f26 100644
--- a/src/Our.Umbraco.IoC.LightInject4/packages.config
+++ b/src/Our.Umbraco.IoC.LightInject4/packages.config
@@ -64,7 +64,7 @@
   <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.Threading.Tasks.Dataflow" version="4.7.0" targetFramework="net45" />