diff --git a/M/packages.config b/M/packages.config
index fb81d65..cf31e36 100644
--- a/M/packages.config
+++ b/M/packages.config
@@ -47,7 +47,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net47" />
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="net47" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="net47" />
-  <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="net47" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="net47" />
   <package id="System.Threading" version="4.3.0" targetFramework="net47" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net47" />
   <package id="System.Threading.Timer" version="4.3.0" targetFramework="net47" />