diff --git a/PettingZoo.WPF/PettingZoo.WPF.csproj b/PettingZoo.WPF/PettingZoo.WPF.csproj
index b494690..836a73c 100644
--- a/PettingZoo.WPF/PettingZoo.WPF.csproj
+++ b/PettingZoo.WPF/PettingZoo.WPF.csproj
@@ -6,6 +6,10 @@
     <UseWPF>true</UseWPF>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="AvalonEdit" Version="6.1.3.50" />
+  </ItemGroup>
+
   <ItemGroup>
     <Reference Include="ICSharpCode.AvalonEdit">
       <HintPath>C:\Users\PsychoMark\.nuget\packages\avalonedit\6.1.2.30\lib\net5.0-windows7.0\ICSharpCode.AvalonEdit.dll</HintPath>