diff --git a/.gitmodules b/.gitmodules
index a3775fc12d..4e4d9c1494 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,7 +1,7 @@
 [submodule "FV3"]
   path = FV3
-  url = https://github.com/NOAA-EMC/fv3atm
-  branch = develop
+  url = https://github.com/haiqinli/fv3atm
+  branch = develop-c3
 [submodule "WW3"]
   path = WW3
   url = https://github.com/NOAA-EMC/WW3
diff --git a/CDEPS-interface/CDEPS b/CDEPS-interface/CDEPS
index 2aa6bfbb62..94acf25b86 160000
--- a/CDEPS-interface/CDEPS
+++ b/CDEPS-interface/CDEPS
@@ -1 +1 @@
-Subproject commit 2aa6bfbb62ebeecd7da964b8074f6c3c41c7d1eb
+Subproject commit 94acf25b8692e38b3c8314125278cdc2700fb869
diff --git a/CMEPS-interface/CMEPS b/CMEPS-interface/CMEPS
index cec8db8d09..fe2c15820c 160000
--- a/CMEPS-interface/CMEPS
+++ b/CMEPS-interface/CMEPS
@@ -1 +1 @@
-Subproject commit cec8db8d09fa0a0b016d197a68edc67cbd100d97
+Subproject commit fe2c15820c27808260c313fa5caa0ae69e987dae
diff --git a/FV3 b/FV3
index 606cb31a5b..8254b1b9ac 160000
--- a/FV3
+++ b/FV3
@@ -1 +1 @@
-Subproject commit 606cb31a5bcb08ed7c8a1214488beb580a6e2781
+Subproject commit 8254b1b9acab93651a81c917d26a107176f6bc80