diff --git a/Lists_of_OSINT_Web_Resources/Recently-Added-Resources_ohshint.md b/Lists_of_OSINT_Web_Resources/Recently-Added-Resources_ohshint.md
index e7c9e21..29439ba 100644
--- a/Lists_of_OSINT_Web_Resources/Recently-Added-Resources_ohshint.md
+++ b/Lists_of_OSINT_Web_Resources/Recently-Added-Resources_ohshint.md
@@ -140,6 +140,7 @@ All dates are listed in *DD/MM/YYYY* format.
 
 ### **Advanced Persistent Threats [APTs]**
 
+- [MITRE ATT&CK Groups](https://attack.mitre.org/groups/) - *Added 8/11/2021.*
 - [[XLSX] APT Groups and Operations](https://docs.google.com/spreadsheets/u/1/d/1H9_xaxQHpWaa4O_Son4Gx0YOIzlcBWMsdvePFX68EKU/pubhtml)  - *Added 8/11/2021.*
    - [[IMAGE] APT Operation Groups](https://imgur.com/a/VePzyqX)  - *Added 8/11/2021.*