diff --git a/EFStudy/packages.config b/EFStudy/packages.config
index f3460a7..4c65de3 100644
--- a/EFStudy/packages.config
+++ b/EFStudy/packages.config
@@ -43,7 +43,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net471" />
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="net471" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="net471" />
-  <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="net471" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="net471" />
   <package id="System.Threading" version="4.3.0" targetFramework="net471" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net471" />
   <package id="System.Threading.Timer" version="4.3.0" targetFramework="net471" />