diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7c025a94076a..3d714dfdf2af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix "Cannot read properties of undefined" crash on malformed arbitrary value ([#18133](https://github.com/tailwindlabs/tailwindcss/pull/18133))
 - Upgrade: Migrate `-mt-[0px]` to `mt-[0px]` instead of the other way around ([#18154](https://github.com/tailwindlabs/tailwindcss/pull/18154))
 - Fix Haml pre-processing crash when there is no `\n` at the end of the file ([#18155](https://github.com/tailwindlabs/tailwindcss/pull/18155))
+- Ignore `.pnpm-store` folders by default (can be overridden by `@source …` rules) ([#18163](https://github.com/tailwindlabs/tailwindcss/pull/18163))
 
 ## [4.1.7] - 2025-05-15
 
diff --git a/crates/oxide/src/scanner/fixtures/ignored-content-dirs.txt b/crates/oxide/src/scanner/fixtures/ignored-content-dirs.txt
index 0ab932ab0a31..e802039a337c 100644
--- a/crates/oxide/src/scanner/fixtures/ignored-content-dirs.txt
+++ b/crates/oxide/src/scanner/fixtures/ignored-content-dirs.txt
@@ -10,3 +10,4 @@ venv
 .parcel-cache
 __pycache__
 .svelte-kit
+.pnpm-store