diff --git a/ecbundle/download.py b/ecbundle/download.py
index cec42d2..afd7787 100644
--- a/ecbundle/download.py
+++ b/ecbundle/download.py
@@ -61,7 +61,7 @@ def parse(cls, url):
 
 
 ECMWF_BITBUCKET_URL = "ssh://git@git.ecmwf.int"
-GITHUB_URL = "https://github.com"
+GITHUB_URL = "git@github.com:"
 
 
 class BundleDownloader(object):