diff --git a/Examples/Directory.Packages.props b/Examples/Directory.Packages.props
index cb840d29..e270818a 100644
--- a/Examples/Directory.Packages.props
+++ b/Examples/Directory.Packages.props
@@ -46,7 +46,7 @@
     <PackageVersion Include="Swashbuckle.AspNetCore.SwaggerUI" Version="10.2.3" />
     <PackageVersion Include="Swashbuckle.AspNetCore.Annotations" Version="10.2.3" />
 
-    <PackageVersion Include="MessagePack" Version="3.1.7" />
+    <PackageVersion Include="MessagePack" Version="3.1.8" />
 
     <PackageVersion Include="MemoryPack" Version="1.21.4" />
 
diff --git a/Sources/Directory.Packages.props b/Sources/Directory.Packages.props
index 67c615f1..4dbffde1 100644
--- a/Sources/Directory.Packages.props
+++ b/Sources/Directory.Packages.props
@@ -13,7 +13,7 @@
     <PackageVersion Include="Grpc.Net.ClientFactory" Version="2.83.0" />
     <PackageVersion Include="Grpc.Tools" Version="2.83.0" />
     <PackageVersion Include="MemoryPack" Version="1.21.4" />
-    <PackageVersion Include="MessagePack" Version="3.1.7" />
+    <PackageVersion Include="MessagePack" Version="3.1.8" />
     <PackageVersion Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="8.0.28" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="1.1.1" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="4.0.1" />