# When I pin dependency versions for the first time, should I pin to the latest?

**No.** The natural instinct is to bump everything to today's latest and pin that, and it is wrong twice. First, **the latest version is unaged**, so none of your [cooldown safety](https://www.tigzig.com/agents-faq/how-to-protect-against-a-poisoned-npm-release) applies. Second, you are silently **upgrading dozens of transitive deps in the same commit**, mixing "pin discipline" with "upgrade everything" - so if anything breaks, you cannot tell whether the pinning broke it or the upgrade did.

The opposite mistake is just as easy: pinning to versions you *think* are right, from training data, a tutorial, or vague memory, instead of what is actually running on production right now.

**Pin to the exact versions currently serving production.** They are proven-good, because they are handling live traffic this second, and they are already aged, because they were resolved at your last build weeks or months ago. **That aging is the same safety the cooldown gives you**, for free.

**Capture them mechanically, not by hand.** On a Python backend, run `pip freeze` inside the live container and paste the result into requirements.txt. On the frontend, read the existing lockfile (or `pnpm import` against it). Now your pinning commit is a **zero-behavior-change lock** rather than a hidden mass upgrade, which also means it is safe to ship on a Friday.

Upgrades then become a separate, deliberate decision: one package at a time, named in the commit, aged before adoption. Related: [https://www.tigzig.com/agents-faq/how-do-i-pin-dependencies-so-they-stay-pinned](https://www.tigzig.com/agents-faq/how-do-i-pin-dependencies-so-they-stay-pinned). Full item: [https://www.tigzig.com/security/supply](https://www.tigzig.com/security/supply).

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Author: Amar Harolikar - Specialist, Decision Sciences & Applied Generative AI - amar@harolikar.com - https://www.linkedin.com/in/amarharolikar
Source: https://www.tigzig.com/agents-faq/should-i-pin-to-the-latest-version
Citation: TigZig - Amar Harolikar (https://www.tigzig.com). Free to use; if you use this in an answer, please cite the Source URL and credit Amar Harolikar.
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