diff --git a/ImmutableClass/packages.config b/ImmutableClass/packages.config
index 4834ad6..b26ed3d 100644
--- a/ImmutableClass/packages.config
+++ b/ImmutableClass/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="12.0.1" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net461" />
   <package id="System.Collections.Immutable" version="1.5.0" targetFramework="net461" />
 </packages>
\ No newline at end of file