diff --git a/sandbox/PerformanceComparison/packages.config b/sandbox/PerformanceComparison/packages.config
index 67e07ae..4cad4fd 100644
--- a/sandbox/PerformanceComparison/packages.config
+++ b/sandbox/PerformanceComparison/packages.config
@@ -6,7 +6,7 @@
   <package id="FsPickler.Json" version="3.2.0" targetFramework="net461" />
   <package id="Google.Protobuf" version="3.2.0" targetFramework="net461" />
   <package id="Jil" version="2.15.0" targetFramework="net461" />
-  <package id="MessagePack" version="0.8.2" targetFramework="net461" />
+  <package id="MessagePack" version="1.9.3" targetFramework="net461" />
   <package id="MsgPack.Cli" version="0.9.0-beta2" targetFramework="net461" />
   <package id="NetSerializer" version="4.1.0" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="10.0.1-beta1" targetFramework="net461" />