diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..dbb5d03
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "Centrifuge.Distance"]
+	path = Centrifuge.Distance
+	url = https://github.com/REHERC/Centrifuge.Distance.git
diff --git a/Centrifuge.Distance b/Centrifuge.Distance
new file mode 160000
index 0000000..4ce25c9
--- /dev/null
+++ b/Centrifuge.Distance
@@ -0,0 +1 @@
+Subproject commit 4ce25c9b8bd3c47a46e9b0f930aeade6ee91bcc5