diff --git a/Make.config b/Make.config
index 3bd36d0350..381bbc9dbe 100644
--- a/Make.config
+++ b/Make.config
@@ -155,9 +155,9 @@ include $(TOP)/mk/mono.mk
 MONO_HASH := $(NEEDED_MONO_VERSION)
 
 # Minimum Mono version for building XI/XM
-MIN_MONO_VERSION=6.12.0.171
+MIN_MONO_VERSION=6.12.0.173
 MAX_MONO_VERSION=6.12.99
-MIN_MONO_URL=https://xamjenkinsartifact.azureedge.net/build-package-osx-mono/2020-02/177/4efc825e831f8fa3401e030f82b527276c8992d1/MonoFramework-MDK-6.12.0.171.macos10.xamarin.universal.pkg
+MIN_MONO_URL=https://xamjenkinsartifact.azureedge.net/build-package-osx-mono/2020-02/179/f34bd77e39212e3a3910775ff08489adfc1013e6/MonoFramework-MDK-6.12.0.173.macos10.xamarin.universal.pkg
 
 # Minimum Mono version for Xamarin.Mac apps using the system mono
 MIN_XM_MONO_VERSION=6.4.0.94
diff --git a/mk/mono.mk b/mk/mono.mk
index ade7a9e5ec..3a26d4aa40 100644
--- a/mk/mono.mk
+++ b/mk/mono.mk
@@ -1,4 +1,4 @@
-NEEDED_MONO_VERSION := 4efc825e831f8fa3401e030f82b527276c8992d1
+NEEDED_MONO_VERSION := f34bd77e39212e3a3910775ff08489adfc1013e6
 NEEDED_MONO_BRANCH := 2020-02
 
 MONO_DIRECTORY := mono