diff --git a/.gitmodules b/.gitmodules
index 05f696a..8225cc0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "docs"]
 	path = docs
-	url = git://github.com/mattn/zencoding-vim.git
+	url = git@github.com:mattn/zencoding-vim.git
 	branch = gh-pages