diff --git a/external/mom6_bathy b/external/mom6_bathy
index aaaca3f..20873fd 160000
--- a/external/mom6_bathy
+++ b/external/mom6_bathy
@@ -1 +1 @@
-Subproject commit aaaca3f690b41acb6eb4bc0d27d0d4ed289a4031
+Subproject commit 20873fda50654b902feac1187e20d9fe4fb8b51a