diff --git a/clusters/threat-actor.json b/clusters/threat-actor.json
index 4f93711..5d281ee 100644
--- a/clusters/threat-actor.json
+++ b/clusters/threat-actor.json
@@ -1517,7 +1517,7 @@
       "meta": {
         "refs": [
           "https://www.f-secure.com/documents/996508/1030745/callisto-group"
-        ],
+        ]
       },
       "value": "Callisto",
       "description": "The Callisto Group  is an advanced threat actor whose known targets include military personnel, government officials, think tanks, and journalists in Europe and the South Caucasus. Their primary interest appears to be gathering intelligence related to foreign and security policy in the Eastern Europe and South Caucasus regions."