diff --git a/Acrolinx.Demo.Sidebar/Acrolinx.Demo.Sidebar.csproj b/Acrolinx.Demo.Sidebar/Acrolinx.Demo.Sidebar.csproj
index 754fb16..78b4e08 100644
--- a/Acrolinx.Demo.Sidebar/Acrolinx.Demo.Sidebar.csproj
+++ b/Acrolinx.Demo.Sidebar/Acrolinx.Demo.Sidebar.csproj
@@ -93,8 +93,9 @@
       <HintPath>..\packages\FSharp.Core.9.0.100\lib\netstandard2.0\FSharp.Core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="log4net, Version=2.0.15.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a, processorArchitecture=MSIL">
-      <HintPath>..\packages\log4net.2.0.15\lib\net45\log4net.dll</HintPath>
+    <Reference Include="log4net, Version=3.0.3.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a">
+      <HintPath>..\packages\log4net.3.0.3\lib\net462\log4net.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="Microsoft.Web.WebView2.Core, Version=1.0.2365.46, Culture=neutral, PublicKeyToken=2a8ab48044d2601e, processorArchitecture=MSIL">
       <HintPath>..\packages\Microsoft.Web.WebView2.1.0.2365.46\lib\net45\Microsoft.Web.WebView2.Core.dll</HintPath>
diff --git a/Acrolinx.Demo.Sidebar/App.config b/Acrolinx.Demo.Sidebar/App.config
index 3ad2912..9bba617 100644
--- a/Acrolinx.Demo.Sidebar/App.config
+++ b/Acrolinx.Demo.Sidebar/App.config
@@ -170,7 +170,7 @@ CAUTION: Don't lift the 360 chassis by the front (bezel end) and back (service e
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="log4net" publicKeyToken="669e0ddf0bb1aa2a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-2.0.15.0" newVersion="2.0.15.0" />
+        <bindingRedirect oldVersion="0.0.0.0-3.0.3.0" newVersion="3.0.3.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="Microsoft.Web.WebView2.WinForms" publicKeyToken="2a8ab48044d2601e" culture="neutral" />
diff --git a/Acrolinx.Demo.Sidebar/packages.config b/Acrolinx.Demo.Sidebar/packages.config
index d45d972..868c472 100644
--- a/Acrolinx.Demo.Sidebar/packages.config
+++ b/Acrolinx.Demo.Sidebar/packages.config
@@ -3,7 +3,7 @@
   <package id="Acrolinx.Sidebar" version="2.1.1.1984" targetFramework="net48" />
   <package id="Diff.Match.Patch" version="3.0.1" targetFramework="net48" />
   <package id="FSharp.Core" version="9.0.100" targetFramework="net48" />
-  <package id="log4net" version="2.0.15" targetFramework="net48" />
+  <package id="log4net" version="3.0.3" targetFramework="net48" />
   <package id="Microsoft.Web.WebView2" version="1.0.2365.46" targetFramework="net48" />
   <package id="Newtonsoft.Json" version="13.0.3" targetFramework="net48" />
   <package id="System.IO.Compression.ZipFile" version="4.3.0" targetFramework="net48" />