diff --git a/.gitmodules b/.gitmodules
index 17ee088..157e28c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "doc/_themes/sphinx-theme-okfn"]
 	path = doc/_themes/sphinx-theme-okfn
-	url = git@github.com:okfn/sphinx-theme-okfn.git
+	url = https://github.com/okfn/sphinx-theme-okfn.git