diff --git a/Offensive.md b/Offensive.md
index 0799aa7..1473ce8 100644
--- a/Offensive.md
+++ b/Offensive.md
@@ -1029,6 +1029,10 @@ Some tools can be categorized in more than one category. But because the current
         <td><a href="https://github.com/nccgroup/nccfsas/tree/main/Tools/spoolsystem">nccgroup/ncssfas - SpoolSystem</a></td>
         <td>SpoolSystem is a CNA script for Cobalt Strike which uses the Print Spooler named pipe impersonation trick to gain SYSTEM privileges.</td>
     </tr>
+    <tr>
+        <td><a href="https://github.com/ollypwn/Certipy">ollypwn/Certipy</a></td>
+        <td>Python implementation for Active Directory certificate abuse</td>
+    </tr>
     <tr>
         <td><a href="https://github.com/rxwx/spoolsystem">rxwx/spoolsystem</a></td>
         <td>Print Spooler Named Pipe Impersonation for Cobalt Strike</td>