diff --git a/tests/Onbox.Revit.Tests/packages.config b/tests/Onbox.Revit.Tests/packages.config
index a11fbbc..85a872f 100644
--- a/tests/Onbox.Revit.Tests/packages.config
+++ b/tests/Onbox.Revit.Tests/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="Castle.Core" version="4.4.0" targetFramework="net48" />
   <package id="Moq" version="4.14.7" targetFramework="net48" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net48" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net48" />
   <package id="NUnit" version="3.12.0" targetFramework="net48" />
   <package id="NUnit3TestAdapter" version="3.17.0" targetFramework="net48" />
   <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.0" targetFramework="net48" />