diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f6255f8
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,9 @@
+[submodule "xml"]
+	path = xml
+	url = https://github.com/snoyberg/xml.git
+[submodule "xml-types-pickle"]
+	path = xml-types-pickle
+	url = git@github.com:Philonous/xml-types-pickle.git
+[submodule "hexpat-internals"]
+	path = hexpat-internals
+	url = git@github.com:Philonous/hexpat-internals.git
diff --git a/hexpat-internals b/hexpat-internals
new file mode 160000
index 0000000..55c95b0
--- /dev/null
+++ b/hexpat-internals
@@ -0,0 +1 @@
+Subproject commit 55c95b082eaa37836822d23bf3313cc8b1ad71af
diff --git a/xml b/xml
new file mode 160000
index 0000000..e5b4238
--- /dev/null
+++ b/xml
@@ -0,0 +1 @@
+Subproject commit e5b4238b214f288cea822222876baf7d3f02699a
diff --git a/xml-types-pickle b/xml-types-pickle
new file mode 160000
index 0000000..950653f
--- /dev/null
+++ b/xml-types-pickle
@@ -0,0 +1 @@
+Subproject commit 950653f0e4266ff4eb1573959b1d584f4e3062a1