diff --git a/src/submodules/MessagePack-CSharp b/src/submodules/MessagePack-CSharp
index 66ff4086d168..fe9fa0834d18 160000
--- a/src/submodules/MessagePack-CSharp
+++ b/src/submodules/MessagePack-CSharp
@@ -1 +1 @@
-Subproject commit 66ff4086d16826e559fe77f7612716088fa1a514
+Subproject commit fe9fa0834d18492eb229ff2923024af2c87553f8