diff --git a/.gitmodules b/.gitmodules
index a1c6502330..ae205b4469 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 = bugfix_thompson_pass_correct_timestep
 [submodule "NEMS"]
   path = NEMS
   url = https://github.com/NOAA-EMC/NEMS
diff --git a/FV3 b/FV3
index ad7bddc3fb..293ad3d9a6 160000
--- a/FV3
+++ b/FV3
@@ -1 +1 @@
-Subproject commit ad7bddc3fbe0b25914fb28439337603ca5d0f3bf
+Subproject commit 293ad3d9a68d0be7197abe34987f139323158138