diff --git a/data/rules/buildkite.yml b/data/rules/buildkite.yml
index 8add2f1..5405c59 100644
--- a/data/rules/buildkite.yml
+++ b/data/rules/buildkite.yml
@@ -12,6 +12,8 @@ rules:
     confidence: medium
     examples:
       - bkua_3c7019c2e4b6e76fe2e8bdde7c154e3c1a211743
+    references:
+      - https://buildkite.com/docs/apis/rest-api/access-token
     validation:
       type: Http
       content: