diff --git a/src/JTTools/JTTools.csproj b/src/JTTools/JTTools.csproj
index f205ed5..31ebc3e 100644
--- a/src/JTTools/JTTools.csproj
+++ b/src/JTTools/JTTools.csproj
@@ -12,9 +12,9 @@
     <PackageReference Include="JT808" Version="2.2.10" />
     <PackageReference Include="JT808.Protocol.Extensions.JT1078" Version="2.2.9.1" />
     <PackageReference Include="JT808.Protocol.Extensions.JTActiveSafety" Version="1.0.4" />
-    <PackageReference Include="JT809" Version="2.1.4-preview4" />
+    <PackageReference Include="JT809" Version="2.1.4-preview5" />
     <PackageReference Include="JT809.Protocol.Extensions.JT1078" Version="2.1.4-preview4" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.4" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.6" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
     <PackageReference Include="NLog.Extensions.Logging" Version="1.6.4" />
   </ItemGroup>