diff --git a/.gitmodules b/.gitmodules
index 0cd8928..1c12789 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "themes/maddybook"]
 	path = themes/maddybook
-	url = git@github.com:makyo/maddybook
+	url = https://github.com/makyo/maddybook