diff --git a/src/Directory.Packages.props b/src/Directory.Packages.props
index 4ba227cb..0bd71a80 100644
--- a/src/Directory.Packages.props
+++ b/src/Directory.Packages.props
@@ -343,7 +343,7 @@
 		<PackageVersion Include="Certes" Version="3.0.4">
 		</PackageVersion>
 		<!-- 👇 HTTP 下载库 -->
-		<PackageVersion Condition="$(TargetFramework.StartsWith('net4'))" Include="Downloader" Version="3.2.1">
+		<PackageVersion Condition="$(TargetFramework.StartsWith('net4'))" Include="Downloader" Version="3.1.2">
 		</PackageVersion>
 		<PackageVersion Condition="!$(TargetFramework.StartsWith('net4'))" Include="Downloader" Version="3.2.1">
 		</PackageVersion>