diff --git a/book/packages.config b/book/packages.config
index f7673ae..6d605a3 100644
--- a/book/packages.config
+++ b/book/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="EntityFramework" version="6.1.3" targetFramework="net452" />
-  <package id="log4net" version="2.0.8" targetFramework="net452" />
+  <package id="log4net" version="2.0.10" targetFramework="net452" />
   <package id="Microsoft.ApplicationInsights" version="2.2.0" targetFramework="net452" />
   <package id="Microsoft.ApplicationInsights.Agent.Intercept" version="2.0.6" targetFramework="net452" />
   <package id="Microsoft.ApplicationInsights.DependencyCollector" version="2.2.0" targetFramework="net452" />