diff --git a/src/Jackett.Common/Definitions/hdforever.yml b/src/Jackett.Common/Definitions/hdforever.yml
index 21784202e..e2327a773 100644
--- a/src/Jackett.Common/Definitions/hdforever.yml
+++ b/src/Jackett.Common/Definitions/hdforever.yml
@@ -7,6 +7,8 @@ type: private
 encoding: UTF-8
 links:
   - https://hdf.world/
+certificates:
+  - 27c3fedf8c79ea2a90e9b09353053080f861364b # expired 13 July 2020
 
 settings:
   - name: username