diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index f0ec25d..86303df 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -13,10 +13,13 @@ on:
 jobs:
   claude:
     if: |
-      (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
-      (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude')) ||
-      (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
-      (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
+      (github.event.sender.type != 'Bot') &&
+      (
+        (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude') && contains(fromJSON('["OWNER","MEMBER","COLLABORATOR","CONTRIBUTOR"]'), github.event.comment.author_association)) ||
+        (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude') && contains(fromJSON('["OWNER","MEMBER","COLLABORATOR","CONTRIBUTOR"]'), github.event.comment.author_association)) ||
+        (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude') && contains(fromJSON('["OWNER","MEMBER","COLLABORATOR","CONTRIBUTOR"]'), github.event.review.author_association)) ||
+        (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')) && contains(fromJSON('["OWNER","MEMBER","COLLABORATOR","CONTRIBUTOR"]'), github.event.issue.author_association))
+      )
     runs-on: ubuntu-latest
     permissions:
       contents: write