diff --git a/rules/windows/builtin/security/win_invoke_obfuscation_via_stdin_services_security.yml b/rules/windows/builtin/security/win_invoke_obfuscation_via_stdin_services_security.yml
index dee3c020a..08e0b457c 100644
--- a/rules/windows/builtin/security/win_invoke_obfuscation_via_stdin_services_security.yml
+++ b/rules/windows/builtin/security/win_invoke_obfuscation_via_stdin_services_security.yml
@@ -7,7 +7,7 @@ description: Detects Obfuscated Powershell via Stdin in Scripts
 status: experimental
 author: Nikita Nazarov, oscd.community
 date: 2020/10/12
-modified: 2021/09/18
+modified: 2021/12/07
 references:
     - https://github.com/Neo23x0/sigma/issues/1009 #(Task28)
 tags: