diff --git a/src/submodules/MessagePack-CSharp b/src/submodules/MessagePack-CSharp
index 66ff4086d168..6caf2996c82d 160000
--- a/src/submodules/MessagePack-CSharp
+++ b/src/submodules/MessagePack-CSharp
@@ -1 +1 @@
-Subproject commit 66ff4086d16826e559fe77f7612716088fa1a514
+Subproject commit 6caf2996c82d2b91528fad41e9c78e09770e73d4