diff --git a/src/jjm.one.Serilog.Sinks.SlackWebHook/jjm.one.Serilog.Sinks.SlackWebHook.csproj b/src/jjm.one.Serilog.Sinks.SlackWebHook/jjm.one.Serilog.Sinks.SlackWebHook.csproj
index fc0bfc9..04e85cd 100644
--- a/src/jjm.one.Serilog.Sinks.SlackWebHook/jjm.one.Serilog.Sinks.SlackWebHook.csproj
+++ b/src/jjm.one.Serilog.Sinks.SlackWebHook/jjm.one.Serilog.Sinks.SlackWebHook.csproj
@@ -41,7 +41,7 @@
 
     <ItemGroup>
         <PackageReference Include="Serilog" Version="3.1.1"/>
-        <PackageReference Include="Serilog.Sinks.PeriodicBatching" Version="3.1.0"/>
+        <PackageReference Include="Serilog.Sinks.PeriodicBatching" Version="4.0.1"/>
         <PackageReference Include="Slack.Webhooks" Version="1.1.5"/>
     </ItemGroup>