diff --git a/.changeset/npm-provenance.md b/.changeset/npm-provenance.md
new file mode 100644
index 0000000..a8fd3f8
--- /dev/null
+++ b/.changeset/npm-provenance.md
@@ -0,0 +1,6 @@
+---
+"@ekz/packer": patch
+"@ekz/eslint-config-packer": patch
+---
+
+Publish with npm provenance attestations, so releases are verifiably built from this repository's GitHub Actions workflow. Also upgrades webpack, webpack-cli, and postcss-preset-env to their latest patch/minor releases.