diff --git a/.gitmodules b/.gitmodules
index 5fd73e70238..3353b602b74 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -14,3 +14,6 @@
 [submodule "modules/yaksa"]
 	path = modules/yaksa
 	url = https://github.com/pmodels/yaksa
+[submodule "modules/mydef_boot"]
+	path = modules/mydef_boot
+	url = https://github.com/pmodels/mydef_boot
diff --git a/modules/mydef_boot b/modules/mydef_boot
new file mode 160000
index 00000000000..ea2d6852486
--- /dev/null
+++ b/modules/mydef_boot
@@ -0,0 +1 @@
+Subproject commit ea2d6852486755eb12e255f760e2eb62f5446329