diff --git a/src/Service/Service.csproj b/src/Service/Service.csproj
index e19c46667..d9bbcc74a 100644
--- a/src/Service/Service.csproj
+++ b/src/Service/Service.csproj
@@ -5,7 +5,7 @@
     <PackageReference Include="Fido2.AspNet" Version="4.0.0-beta.16" />
     <PackageReference Include="Fido2.Models" Version="4.0.0-beta.16" />
     <PackageReference Include="Humanizer.Core" Version="2.14.1" />
-    <PackageReference Include="MessagePack" Version="2.5.192" />
+    <PackageReference Include="MessagePack" Version="3.1.0" />
     <PackageReference Include="MessagePackAnalyzer" Version="2.5.192">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>