diff --git a/.github/workflows/comment-to-trigger-teamcity.yml b/.github/workflows/comment-to-trigger-teamcity.yml
index 92336f430f5fe1..5e40d1c0cfcece 100644
--- a/.github/workflows/comment-to-trigger-teamcity.yml
+++ b/.github/workflows/comment-to-trigger-teamcity.yml
@@ -230,6 +230,12 @@ jobs:
         # Matches .sh files under regression-test/pipeline/ but excludes files under conf/ subdirectories.
         source regression-test/pipeline/common/github-utils.sh
 
+        if [[ ! -f all_files ]]; then
+          echo "WARNING: all_files not found (GitHub API call likely failed in previous step)."
+          echo "Skipping sensitive check — previous step already defaulted to trigger-all."
+          exit 0
+        fi
+
         changed_sensitive=false
         while IFS= read -r f; do
           if [[ "${f}" == regression-test/pipeline/*.sh ||
diff --git a/regression-test/pipeline/common/github-utils.sh b/regression-test/pipeline/common/github-utils.sh
index ca3977bfc4c835..048b282701ecf0 100644
--- a/regression-test/pipeline/common/github-utils.sh
+++ b/regression-test/pipeline/common/github-utils.sh
@@ -131,7 +131,9 @@ _get_pr_changed_files_count() {
     while [[ ${try_times} -gt 0 ]]; do
         set -x
         if ret=$(
-            curl -s -H "Accept: application/vnd.github+json" \
+            curl -s \
+                -H "Accept: application/vnd.github+json" \
+                ${GITHUB_TOKEN:+-H "Authorization: Bearer ${GITHUB_TOKEN}"} \
                 https://api.github.com/repos/"${OWNER}"/"${REPO}"/pulls/"${PULL_NUMBER}" | jq -e '.changed_files'
         ); then
             set +x
@@ -169,6 +171,7 @@ _get_pr_changed_files() {
             set -x
             if curl -s \
                 -H "Accept: application/vnd.github+json" \
+                ${GITHUB_TOKEN:+-H "Authorization: Bearer ${GITHUB_TOKEN}"} \
                 https://api.github.com/repos/"${OWNER}"/"${REPO}"/pulls/"${PULL_NUMBER}"/files?page="${page}"\&per_page="${per_page}" \
                 >>"${file_name}"; then
                 set +x