diff --git a/rules/os/os_directory_services_configured.yaml b/rules/os/os_directory_services_configured.yaml
index 6ad2ee38..39fe89e3 100644
--- a/rules/os/os_directory_services_configured.yaml
+++ b/rules/os/os_directory_services_configured.yaml
@@ -15,6 +15,8 @@ fix: |
 references:
   cci:
     - CCI-000366
+  800-53r5:
+    - CM-6
   800-53r4:
     - CM-6(b)
   srg: