diff --git a/test/E2ETest/Microsoft.Test.E2E.AspNet.OData/Build.AspNet/packages.config b/test/E2ETest/Microsoft.Test.E2E.AspNet.OData/Build.AspNet/packages.config
index 4d57b0c00e..baeb175a72 100644
--- a/test/E2ETest/Microsoft.Test.E2E.AspNet.OData/Build.AspNet/packages.config
+++ b/test/E2ETest/Microsoft.Test.E2E.AspNet.OData/Build.AspNet/packages.config
@@ -46,7 +46,7 @@
   <package id="System.Spatial" version="5.8.4" targetFramework="net452" />
   <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.Xml.ReaderWriter" version="4.3.0" targetFramework="net45" />