diff --git a/external/mono b/external/mono
index 4498dc4a62f..c51d1343f37 160000
--- a/external/mono
+++ b/external/mono
@@ -1 +1 @@
-Subproject commit 4498dc4a62fe7dcd4e3b29898144f41d6396f577
+Subproject commit c51d1343f37b5b7a21ee2c0db5188485b7dae295