diff --git a/Chapter.06/TwitterEmotionAnalysis.cs/packages.config b/Chapter.06/TwitterEmotionAnalysis.cs/packages.config
index 94740fc4..5d8a1dd3 100644
--- a/Chapter.06/TwitterEmotionAnalysis.cs/packages.config
+++ b/Chapter.06/TwitterEmotionAnalysis.cs/packages.config
@@ -6,7 +6,7 @@
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net461" />
   <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net461" />
   <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net461" />
   <package id="System.Reactive" version="3.1.1" targetFramework="net461" />
   <package id="System.Reactive.Core" version="3.1.1" targetFramework="net461" />
   <package id="System.Reactive.Interfaces" version="3.1.1" targetFramework="net461" />