diff --git a/test/Microsoft.OpenApi.CSharpAnnotations.DocumentGeneration.Tests.Contracts/packages.config b/test/Microsoft.OpenApi.CSharpAnnotations.DocumentGeneration.Tests.Contracts/packages.config
index 77c4932..ce3dc38 100644
--- a/test/Microsoft.OpenApi.CSharpAnnotations.DocumentGeneration.Tests.Contracts/packages.config
+++ b/test/Microsoft.OpenApi.CSharpAnnotations.DocumentGeneration.Tests.Contracts/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="11.0.1" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net461" />
 </packages>
\ No newline at end of file