diff --git a/Demo/MessageWriter/packages.config b/Demo/MessageWriter/packages.config
index 51655fb..d5302d8 100644
--- a/Demo/MessageWriter/packages.config
+++ b/Demo/MessageWriter/packages.config
@@ -48,7 +48,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.2" targetFramework="net461" />
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="net461" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="net461" />
   <package id="System.Threading" version="4.3.0" targetFramework="net461" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net461" />
   <package id="System.Threading.Timer" version="4.3.0" targetFramework="net461" />