diff --git a/src/submodules/MessagePack-CSharp b/src/submodules/MessagePack-CSharp
index 6caf2996c82d..9aeb12b9bdb0 160000
--- a/src/submodules/MessagePack-CSharp
+++ b/src/submodules/MessagePack-CSharp
@@ -1 +1 @@
-Subproject commit 6caf2996c82d2b91528fad41e9c78e09770e73d4
+Subproject commit 9aeb12b9bdb024512ffe2e4bddfa2785dca6e39e