diff --git a/config/environments/production.rb b/config/environments/production.rb
index df783bd..a59f0bd 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -87,6 +87,5 @@ Rails.application.configure do
     script_name: config.relative_url_root,
   }
 
-  config.api_url = "http://zeus.ugent.be/tab"
-
+  config.api_url = "https://zeus.ugent.be/tab"
 end