diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000..61994529a0
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "libs/bitcoinj"]
+	path = libs/bitcoinj
+	url = git://github.com/bitcoinj/bitcoinj