diff --git a/clusters/threat-actor.json b/clusters/threat-actor.json
index b427be2..e1a1581 100644
--- a/clusters/threat-actor.json
+++ b/clusters/threat-actor.json
@@ -2528,7 +2528,7 @@
       "meta": {
         "country": "RU",
         "refs": [
-          "http://www.welivesecurity.com/2015/11/11/operathion-buhtrap-malware-distributed-via-ammyy-com/"
+          "https://www.welivesecurity.com/2015/11/11/operation-buhtrap-malware-distributed-via-ammyy-com/"
         ]
       },
       "uuid": "b737c51f-b579-49d5-a907-743b2e6d03cb",