diff --git a/ersilia/hub/content/card.py b/ersilia/hub/content/card.py
index 2e577eea4..29482b13d 100644
--- a/ersilia/hub/content/card.py
+++ b/ersilia/hub/content/card.py
@@ -108,7 +108,7 @@ def __init__(self, config_json):
 
     @staticmethod
     def _get_read_only_airtable_api_key():
-        url = "https://raw.githubusercontent.com/ersilia-os/ersilia/config/read_only_keys.json"
+        url = "https://raw.githubusercontent.com/ersilia-os/ersilia/master/config/read_only_keys.json"
         r = requests.get(url)
         data = r.json()
         return data["AIRTABLE_READONLY_API_KEY"]