diff --git a/src/Plugins/BotSharp.Plugin.PaddleSharp/BotSharp.Plugin.PaddleSharp.csproj b/src/Plugins/BotSharp.Plugin.PaddleSharp/BotSharp.Plugin.PaddleSharp.csproj
index 2a04ce0f..75f0246a 100644
--- a/src/Plugins/BotSharp.Plugin.PaddleSharp/BotSharp.Plugin.PaddleSharp.csproj
+++ b/src/Plugins/BotSharp.Plugin.PaddleSharp/BotSharp.Plugin.PaddleSharp.csproj
@@ -19,6 +19,7 @@
     <PackageReference Include="Sdcb.PaddleInference.runtime.win64.mkl" Version="2.5.1" />
     <PackageReference Include="Sdcb.PaddleOCR" Version="2.7.0.1" />
     <PackageReference Include="Sdcb.PaddleOCR.Models.LocalV3" Version="2.7.0.1" />
+    <PackageReference Include="System.Drawing.Common" Version="8.0.7" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Plugins/BotSharp.Plugin.PaddleSharp/Providers/Pdf2TextConverter.cs b/src/Plugins/BotSharp.Plugin.PaddleSharp/Providers/Pdf2TextConverter.cs
index 58f2015a..a66cb8f9 100644
--- a/src/Plugins/BotSharp.Plugin.PaddleSharp/Providers/Pdf2TextConverter.cs
+++ b/src/Plugins/BotSharp.Plugin.PaddleSharp/Providers/Pdf2TextConverter.cs
@@ -1,13 +1,10 @@
 using System;
 using System.Collections.Generic;
-using System.Text;
 using System.IO;
 using ImageMagick;
 using OpenCvSharp;
-using Microsoft.AspNetCore.Http;
 using Sdcb.PaddleInference;
 using Sdcb.PaddleOCR.Models;
-using Sdcb.PaddleOCR.Models.LocalV3;
 using Sdcb.PaddleOCR;
 using System.Threading.Tasks;
 using BotSharp.Abstraction.Knowledges;