diff --git a/ImageSharp.WpfImageSource/packages.config b/ImageSharp.WpfImageSource/packages.config
index 62102d4..56f4ab5 100644
--- a/ImageSharp.WpfImageSource/packages.config
+++ b/ImageSharp.WpfImageSource/packages.config
@@ -33,7 +33,7 @@
   <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.Parallel" version="4.3.0" targetFramework="net45" />