diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index 68f113e..8f7cee4 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -18,7 +18,7 @@ jobs:
     #   github.event.pull_request.user.login == 'new-developer' ||
     #   github.event.pull_request.author_association == 'FIRST_TIME_CONTRIBUTOR'
 
-    runs-on: jp-arm-oracle
+    runs-on: ubuntu-latest
     permissions:
       contents: read
       pull-requests: read
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index e792443..6c87e9c 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -17,7 +17,7 @@ jobs:
       (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')))
-    runs-on: jp-arm-oracle
+    runs-on: ubuntu-latest
     permissions:
       contents: read
       pull-requests: read