diff --git a/.gitmodules b/.gitmodules
index 89b0ee39..d7f8e591 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "ihk"]
 	path = ihk
-	url = postpeta@postpeta.pccluster.org:ihk
+	url = https://github.com/RIKEN-SysSoft/ihk.git