diff --git a/.gitmodules b/.gitmodules
index 38977c3d..4a253364 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule ".travis"]
 	path = .travis
-	url = git://github.com/jsk-ros-pkg/jsk_travis.git
+	url = https://github.com/jsk-ros-pkg/jsk_travis.git