diff --git a/src/Jackett.Common/Definitions/hdu.yml b/src/Jackett.Common/Definitions/hdu.yml
index 7b9b94035..cdf03b5aa 100644
--- a/src/Jackett.Common/Definitions/hdu.yml
+++ b/src/Jackett.Common/Definitions/hdu.yml
@@ -9,6 +9,8 @@ links:
   - https://pt.upxin.net/
 legacylinks:
   - http://pt.upxin.net/
+certificates:
+  - d52ca3e97d730541d8f81452185e4481225f3a2d # expired 06/Jan/2022
 
 caps:
   categorymappings: