diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..30063bb
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "pear-Net_IDNA2"]
+	path = pear-Net_IDNA2
+	url = http://git.dvaslona.com/misc/pear-Net_IDNA2.git