diff --git a/.gitmodules b/.gitmodules
index ab72b60a64..d18f343caa 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,7 +1,9 @@
 [submodule "FV3"]
   path = FV3
-  url = https://github.com/NOAA-EMC/fv3atm
-  branch = develop
+#  url = https://github.com/NOAA-EMC/fv3atm
+#  branch = develop
+  url = https://github.com/DusanJovic-NOAA/ufs-weather-model
+  branch = cubed_sphere_chunks
 [submodule "WW3"]
   path = WW3
   url = https://github.com/NOAA-EMC/WW3
diff --git a/FV3 b/FV3
index 1e10d62a97..efc259e3ad 160000
--- a/FV3
+++ b/FV3
@@ -1 +1 @@
-Subproject commit 1e10d62a971e4114faea90ae2f134664f3a9ef02
+Subproject commit efc259e3ad3f6acef958bf743fee26c793080781