diff --git a/.gitmodules b/.gitmodules
index 068339c16..b271aa422 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,5 +10,5 @@
   branch = v1.3.0
 [submodule "repos/builtin"]
   path = repos/builtin
-  url = https://github.com/jcsda/spack-packages
-  branch = spack-stack-dev
+  url = https://github.com/AlexanderRichert-NOAA/spack-packages
+  branch = pympi4py_cxxdep
diff --git a/repos/builtin b/repos/builtin
index 3ad59cbb5..d9ad9f158 160000
--- a/repos/builtin
+++ b/repos/builtin
@@ -1 +1 @@
-Subproject commit 3ad59cbb58e7973b5d8e8f2091896ee8dc70ab89
+Subproject commit d9ad9f15855d490742b54305562667a877b0eaf0