diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4fd68fde..840ee9ed 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -140,7 +140,7 @@ jobs:
         # SHA-pinned (was @feat/al2023-support). The same SHA is reused by
         # the stop-runner step so both halves of the runner lifecycle run
         # identical action code.
-        uses: namecheap/ec2-github-runner@6bb148b43cd5b3734d81f8a7dd7ab15b3d7f7a8b # feat/al2023-support @ 2026-04-21 — Phase 6.a: IMDSv2 required
+        uses: namecheap/ec2-github-runner@0fdd4014da74d56d46154f73a1cfe6d6113cbedc # feat/al2023-support @ 2026-04-21 — Phase 4 (retry): non-root runner + --ephemeral + hardcoded checksum table
         with:
           mode: start
           github-token: ${{ secrets.GH_TOKEN }}
@@ -231,7 +231,7 @@ jobs:
       - name: Stop EC2 runner
         # SHA-pinned (was @main). Matches the start-runner step above so
         # stop logic is in lockstep with the code that started the runner.
-        uses: namecheap/ec2-github-runner@6bb148b43cd5b3734d81f8a7dd7ab15b3d7f7a8b # feat/al2023-support @ 2026-04-21 — Phase 6.a: IMDSv2 required
+        uses: namecheap/ec2-github-runner@0fdd4014da74d56d46154f73a1cfe6d6113cbedc # feat/al2023-support @ 2026-04-21 — Phase 4 (retry): non-root runner + --ephemeral + hardcoded checksum table
         with:
           mode: stop
           github-token: ${{ secrets.GH_TOKEN }}