diff --git a/contrib/linearize/linearize-data.py b/contrib/linearize/linearize-data.py
index 0a22cbf90..1ee430e09 100755
--- a/contrib/linearize/linearize-data.py
+++ b/contrib/linearize/linearize-data.py
@@ -269,9 +269,9 @@ if __name__ == '__main__':
 	f.close()
 
 	if 'netmagic' not in settings:
-		settings['netmagic'] = 'cee2caff'
+		settings['netmagic'] = '456c6c61'
 	if 'genesis' not in settings:
-		settings['genesis'] = '00000bafbc94add76cb75e2ec92894837288a481e5c005f6563d91623bf8bc2c'
+		settings['genesis'] = '000002333ac985182810346a7c4c81dff5b73597e9aadc7dd2f5b23e80817d8c'
 	if 'input' not in settings:
 		settings['input'] = 'input'
 	if 'hashlist' not in settings: