diff --git a/src/Pulsus.Net4/packages.config b/src/Pulsus.Net4/packages.config
index a7ac88a..d9261b8 100644
--- a/src/Pulsus.Net4/packages.config
+++ b/src/Pulsus.Net4/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="5.0.6" targetFramework="net40" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net40" />
 </packages>
\ No newline at end of file