diff --git a/src/submodules/MessagePack-CSharp b/src/submodules/MessagePack-CSharp
index ecc4e18ad7a0..9aeb12b9bdb0 160000
--- a/src/submodules/MessagePack-CSharp
+++ b/src/submodules/MessagePack-CSharp
@@ -1 +1 @@
-Subproject commit ecc4e18ad7a0c7db51cd7e3d2997a291ed01444d
+Subproject commit 9aeb12b9bdb024512ffe2e4bddfa2785dca6e39e