diff --git a/mk/mono.mk b/mk/mono.mk
index 80cf16e1c155..3928969d646e 100644
--- a/mk/mono.mk
+++ b/mk/mono.mk
@@ -1,4 +1,4 @@
-NEEDED_MONO_VERSION := 29b1ac19c961b959a09097dbc0fe4cd567cc5298
+NEEDED_MONO_VERSION := 70d690305348cb30cf620db0679ba1173dc7adb0
 NEEDED_MONO_BRANCH := 2019-08
 
 MONO_DIRECTORY := mono