diff --git a/TypeHierarchyViewer/packages.config b/TypeHierarchyViewer/packages.config
index 8f2fc6a..ac30f92 100644
--- a/TypeHierarchyViewer/packages.config
+++ b/TypeHierarchyViewer/packages.config
@@ -39,7 +39,7 @@
   <package id="Microsoft.VisualStudio.Validation" version="15.3.58" targetFramework="net472" />
   <package id="Microsoft.VSSDK.BuildTools" version="16.0.2264" targetFramework="net472" developmentDependency="true" />
   <package id="Nerdbank.Streams" version="2.1.37" targetFramework="net472" />
-  <package id="Newtonsoft.Json" version="12.0.1" targetFramework="net472" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="StreamJsonRpc" version="2.0.167" targetFramework="net472" />
   <package id="System.Buffers" version="4.5.0" targetFramework="net472" />
   <package id="System.Collections" version="4.3.0" targetFramework="net472" />