diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj
index d21b34f..f09a0af 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj
@@ -57,8 +57,8 @@
     </AssemblyOriginatorKeyFile>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="ICSharpCode.AvalonEdit, Version=6.0.1.278, Culture=neutral, PublicKeyToken=9cc39be672370310, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\AvalonEdit.6.0.1\lib\net45\ICSharpCode.AvalonEdit.dll</HintPath>
+    <Reference Include="ICSharpCode.AvalonEdit, Version=6.1.2.30, Culture=neutral, PublicKeyToken=9cc39be672370310, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\AvalonEdit.6.1.2.30\lib\net45\ICSharpCode.AvalonEdit.dll</HintPath>
     </Reference>
     <Reference Include="PresentationCore" />
     <Reference Include="PresentationFramework" />
diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/packages.config b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/packages.config
index 9be2620..dcbabff 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/packages.config
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="AvalonEdit" version="6.0.1" targetFramework="net462" />
+  <package id="AvalonEdit" version="6.1.2.30" targetFramework="net462" />
   <package id="UTF.Unknown" version="2.3.0" targetFramework="net462" />
 </packages>
\ No newline at end of file