diff --git a/Tutorial.Tests.iOS/packages.config b/Tutorial.Tests.iOS/packages.config
index 6dc1122..fae058f 100644
--- a/Tutorial.Tests.iOS/packages.config
+++ b/Tutorial.Tests.iOS/packages.config
@@ -70,7 +70,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.2" targetFramework="xamarinios10" />
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="xamarinios10" />
-  <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="xamarinios10" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="xamarinios10" />
   <package id="System.Threading" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Threading.Timer" version="4.3.0" targetFramework="xamarinios10" />