diff --git a/BlogHelper9000.Nvim.Tests/BlogHelper9000.Nvim.Tests.csproj b/BlogHelper9000.Nvim.Tests/BlogHelper9000.Nvim.Tests.csproj
index 191d881..7b3d3bc 100644
--- a/BlogHelper9000.Nvim.Tests/BlogHelper9000.Nvim.Tests.csproj
+++ b/BlogHelper9000.Nvim.Tests/BlogHelper9000.Nvim.Tests.csproj
@@ -16,7 +16,7 @@
 
     <ItemGroup>
         <PackageReference Include="FluentAssertions" Version="8.11.0" />
-        <PackageReference Include="MessagePack" Version="3.1.8" />
+        <PackageReference Include="MessagePack" Version="3.1.9" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
         <PackageReference Include="xunit.v3" Version="3.2.2"/>
         <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
diff --git a/BlogHelper9000.Nvim/BlogHelper9000.Nvim.csproj b/BlogHelper9000.Nvim/BlogHelper9000.Nvim.csproj
index 0abb8b1..5dc8f6c 100644
--- a/BlogHelper9000.Nvim/BlogHelper9000.Nvim.csproj
+++ b/BlogHelper9000.Nvim/BlogHelper9000.Nvim.csproj
@@ -13,7 +13,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="MessagePack" Version="3.1.8" />
+        <PackageReference Include="MessagePack" Version="3.1.9" />
         <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.9" />
     </ItemGroup>