diff --git a/Source/Fiddle/packages.config b/Source/Fiddle/packages.config
index f443f49..5ce96f2 100644
--- a/Source/Fiddle/packages.config
+++ b/Source/Fiddle/packages.config
@@ -16,7 +16,7 @@
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net461" />
   <package id="Microsoft.Owin.Hosting" version="2.0.2" targetFramework="net461" />
   <package id="Microsoft.Owin.StaticFiles" version="3.0.1" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="6.0.4" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net461" />
   <package id="Owin" version="1.0" targetFramework="net461" />
   <package id="OxyPlot.Core" version="1.0.0-unstable2044" targetFramework="net461" />
   <package id="OxyPlot.WindowsForms" version="1.0.0-unstable2044" targetFramework="net461" />