diff --git a/.gitmodules b/.gitmodules
index 363b6cb..64771f3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "SolidPython"]
 	path = SolidPython
-	url = git@github.com:SolidCode/SolidPython.git
+	url = git://github.com/SolidCode/SolidPython.git
+[submodule "ThingDoc"]
+	path = ThingDoc
+	url = git://github.com/SolidCode/ThingDoc.git
diff --git a/ThingDoc b/ThingDoc
new file mode 160000
index 0000000..e281b7c
--- /dev/null
+++ b/ThingDoc
@@ -0,0 +1 @@
+Subproject commit e281b7c1e94dba7762fab5dc5538c4c02263b7e0