diff --git a/atomics/T1056.001/T1056.001.yaml b/atomics/T1056.001/T1056.001.yaml
index 595f20bc..6f8fd663 100644
--- a/atomics/T1056.001/T1056.001.yaml
+++ b/atomics/T1056.001/T1056.001.yaml
@@ -174,7 +174,8 @@ atomic_tests:
 - name: MacOS Swift Keylogger
   description: |
     Utilizes a swift script to log keys to sout. It runs for 5 seconds then dumps the output to standard. Input Monitoring is required.
-    Input Monitoring can be enabled in System Preferences > Security & Privacy > Privacy > Input Monitoring
+    Input Monitoring can be enabled in System Preferences > Security & Privacy > Privacy > Input Monitoring.
+    Referece: https://cedowens.medium.com/taking-esf-for-a-nother-spin-6e1e6acd1b74
   supported_platforms:
     - macos
   input_arguments: