diff --git a/Kata_Invoicing/Kata_Invoicing.csproj b/Kata_Invoicing/Kata_Invoicing.csproj
index 20bf23b..d9aa9ac 100644
--- a/Kata_Invoicing/Kata_Invoicing.csproj
+++ b/Kata_Invoicing/Kata_Invoicing.csproj
@@ -41,8 +41,9 @@
     <Reference Include="ICSharpCode.SharpZipLib, Version=1.2.0.246, Culture=neutral, PublicKeyToken=1b03e6acf1164f73, processorArchitecture=MSIL">
       <HintPath>..\packages\SharpZipLib.1.2.0\lib\net45\ICSharpCode.SharpZipLib.dll</HintPath>
     </Reference>
-    <Reference Include="log4net, Version=2.0.8.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a, processorArchitecture=MSIL">
-      <HintPath>..\packages\log4net.2.0.8\lib\net45-full\log4net.dll</HintPath>
+    <Reference Include="log4net, Version=3.3.0.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a">
+      <HintPath>..\packages\log4net.3.3.0\lib\net462\log4net.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="NPOI, Version=2.5.1.0, Culture=neutral, PublicKeyToken=0df73ec7942b34e1, processorArchitecture=MSIL">
       <HintPath>..\packages\NPOI.2.5.1\lib\net45\NPOI.dll</HintPath>
diff --git a/Kata_Invoicing/packages.config b/Kata_Invoicing/packages.config
index cb42827..a3c6b25 100644
--- a/Kata_Invoicing/packages.config
+++ b/Kata_Invoicing/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="log4net" version="2.0.8" targetFramework="net472" />
+  <package id="log4net" version="3.3.0" targetFramework="net472" />
   <package id="NPOI" version="2.5.1" targetFramework="net472" />
   <package id="Portable.BouncyCastle" version="1.8.6.7" targetFramework="net472" />
   <package id="SharpZipLib" version="1.2.0" targetFramework="net472" />