diff --git a/.github/workflows/mark-stable.yml b/.github/workflows/mark-stable.yml
index 07ed882..b4428a6 100644
--- a/.github/workflows/mark-stable.yml
+++ b/.github/workflows/mark-stable.yml
@@ -25,12 +25,14 @@ jobs:
 
           SHA="${GITHUB_SHA}"
           API_URL="https://api.github.com/repos/${GITHUB_REPOSITORY}/actions/workflows/ci.yml/runs?head_sha=${SHA}&event=push&per_page=20"
+          WAIT_INTERVAL_SECONDS=20
+          MAX_ATTEMPTS=360 # 2 hours max wait
 
           STATUS=""
           CONCLUSION=""
 
-          echo "Waiting for CI on main for ${SHA}..."
-          for attempt in $(seq 1 30); do
+          echo "Waiting for CI on main for ${SHA} (up to 2 hours)..."
+          for attempt in $(seq 1 "${MAX_ATTEMPTS}"); do
             RESPONSE="$(curl -fsSL \
               -H "Authorization: Bearer ${GH_TOKEN}" \
               -H "Accept: application/vnd.github+json" \
@@ -40,9 +42,9 @@ jobs:
             CONCLUSION="$(printf '%s' "${RESPONSE}" | jq -r '.workflow_runs[] | select(.head_branch=="main") | .conclusion' | head -n1)"
 
             if [[ -n "${STATUS}" ]]; then
-              echo "CI status=${STATUS} conclusion=${CONCLUSION:-none} (attempt ${attempt}/30)"
+              echo "CI status=${STATUS} conclusion=${CONCLUSION:-none} (attempt ${attempt}/${MAX_ATTEMPTS})"
             else
-              echo "No CI run for main found yet (attempt ${attempt}/30)"
+              echo "No CI run for main found yet (attempt ${attempt}/${MAX_ATTEMPTS})"
             fi
 
             if [[ "${STATUS}" == "completed" ]]; then
@@ -54,7 +56,7 @@ jobs:
               exit 1
             fi
 
-            sleep 20
+            sleep "${WAIT_INTERVAL_SECONDS}"
           done
 
           if [[ "${STATUS}" != "completed" || "${CONCLUSION}" != "success" ]]; then