diff --git a/.claude/skills/running-tend/SKILL.md b/.claude/skills/running-tend/SKILL.md
index e4a02cb53..94786bb49 100644
--- a/.claude/skills/running-tend/SKILL.md
+++ b/.claude/skills/running-tend/SKILL.md
@@ -181,6 +181,12 @@ Commit `flake.lock` alongside the other toolchain changes. After bumping, run
 the full test suite (`cargo run -- hook pre-merge --yes`) and verify
 `cargo msrv verify` passes.
 
+## Weekly Maintenance: CI Pin Bumps
+
+Bump pinned third-party versions in `.github/workflows/ci.yaml` to track upstream:
+
+- **`hustcer/setup-nu@v3`** — set `version:` to the latest from `gh api repos/nushell/nushell/releases/latest --jq '.tag_name'` and update all three call sites (`test`, `benchmarks`, `code-coverage`).
+
 ## Weekly Maintenance: Statusline Cache-Check
 
 Detect new in-process cache-miss duplicates introduced by recent changes by