diff --git a/.gitmodules b/.gitmodules
index 0c3b70cc3f..4f2f53ad71 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/climbfuji/fv3atm
+  branch = split_physics_group_20210409
 [submodule "NEMS"]
   path = NEMS
   url = https://github.com/NOAA-EMC/NEMS
diff --git a/FV3 b/FV3
index ebccc53404..1ed56ac91b 160000
--- a/FV3
+++ b/FV3
@@ -1 +1 @@
-Subproject commit ebccc534045dc793c0a1191c5f24336d721a96ee
+Subproject commit 1ed56ac91b77b675a9e318fb52833fc360ef26c1