diff --git a/src/net40/TweetSharp.Next.Tests/packages.config b/src/net40/TweetSharp.Next.Tests/packages.config
index eb51327..4a1f051 100644
--- a/src/net40/TweetSharp.Next.Tests/packages.config
+++ b/src/net40/TweetSharp.Next.Tests/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="NUnit" version="2.5.9.10348" />
-  <package id="Newtonsoft.Json" version="4.0.1" />
+  <package id="Newtonsoft.Json" version="13.0.1" />
 </packages>
\ No newline at end of file
diff --git a/src/net40/TweetSharp.Next/packages.config b/src/net40/TweetSharp.Next/packages.config
index 2e02c74..3f44ac9 100644
--- a/src/net40/TweetSharp.Next/packages.config
+++ b/src/net40/TweetSharp.Next/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="4.0.1" />
+  <package id="Newtonsoft.Json" version="13.0.1" />
   <package id="Hammock" version="1.2.3" />
 </packages>
\ No newline at end of file