diff --git a/src/submodules/MessagePack-CSharp b/src/submodules/MessagePack-CSharp
index 8861abdde9..6f5f80e2f5 160000
--- a/src/submodules/MessagePack-CSharp
+++ b/src/submodules/MessagePack-CSharp
@@ -1 +1 @@
-Subproject commit 8861abdde93a3b97180ac3b2eafa33459ad52392
+Subproject commit 6f5f80e2f56fd14627108e19830685450e8701f1