diff --git a/SRC.Sharp/SRCCore/SRCCore.csproj b/SRC.Sharp/SRCCore/SRCCore.csproj
index 8fb65d45..8443d072 100644
--- a/SRC.Sharp/SRCCore/SRCCore.csproj
+++ b/SRC.Sharp/SRCCore/SRCCore.csproj
@@ -26,7 +26,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageReference Include="ShiftJISExtension" Version="1.1.0" />
     <PackageReference Include="System.Collections.Specialized" Version="4.3.0" />
-    <PackageReference Include="System.Drawing.Common" Version="10.0.3" />
+    <PackageReference Include="System.Drawing.Common" Version="8.0.0" />
     <PackageReference Include="System.Text.Encoding.CodePages" Version="10.0.3" />
   </ItemGroup>