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+# Maintaining brotli
+
+The [brotli](https://github.com/google/brotli) dependency is used for 
+the homonym generic-purpose lossless compression algorithm.
+
+## Updating brotli
+
+The `tools/dep_updaters/update-brotli.sh` script automates the update of the
+brotli source files.
+
+Check that Node.js still builds and tests.
+
+## Committing postject
+
+1. Add brotli:
+   ```console
+   $ git add deps/brotli
+   ```
+2. Commit the changes: `git commit`.
+3. Add a message like:
+
+   ```text
+   deps,test: update brotli to <version>
+
+   Updated as described in doc/contributing/maintaining-brotli.md.
+   ```