diff --git a/.gitmodules b/.gitmodules
index b5d1a03..e44d8bc 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -36,7 +36,7 @@
 [submodule "Require"]
 	path = Require
 	url = https://github.com/PredictiveEcology/Require
-	branch = development
+	branch = simplify4
 [submodule "SDMTools"]
 	path = SDMTools
 	url = https://github.com/cran/SDMTools
diff --git a/.registry b/.registry
index ab969dc..8844ea0 160000
--- a/.registry
+++ b/.registry
@@ -1 +1 @@
-Subproject commit ab969dc6aa1d639ee5d3e4317ea0392b1fdda0c5
+Subproject commit 8844ea0b5a06fb50473f967896fc8e4129812939