diff --git a/.gitmodules b/.gitmodules
index e9d24b32c73..c2ebc1d4bae 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -5,7 +5,7 @@
 [submodule "external/mono"]
 	path = external/mono
 	url = https://github.com/mono/mono.git
-	branch = mono-4.5.0-branch
+	branch = mono-4.6.0-branch
 [submodule "external/mxe"]
 	path = external/mxe
 	url = https://github.com/xamarin/mxe.git
diff --git a/external/mono b/external/mono
index c7a9db46011..1ac151d24b0 160000
--- a/external/mono
+++ b/external/mono
@@ -1 +1 @@
-Subproject commit c7a9db460118ad72bd6eca765d1ac8fa02d4d219
+Subproject commit 1ac151d24b0159a71015abd41d4704e2c1310cc2