diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..461cce6
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "core/debootstrap"]
+	path = core/debootstrap
+	url = https://salsa.debian.org/installer-team/debootstrap.git
+	branch = 1.0.134
diff --git a/core/debootstrap b/core/debootstrap
new file mode 160000
index 0000000..ca11235
--- /dev/null
+++ b/core/debootstrap
@@ -0,0 +1 @@
+Subproject commit ca11235d35d6a1d4961f98c8c37000dd1ba9b041