# January 9, 2026

## 3.37.4

**`(fix):`** Fix protobuf IR generation to support air-gapped environments. The CLI now uses a pre-cached `buf.lock` file if it exists, skipping the network call to `buf dep update`. This enables self-hosted deployments to work in air-gapped environments by running `buf dep update` at build time to cache dependencies.

## 3.38.0

**`(feat):`** Add support for automatic configuration migration in *generators.yml* when running `fern generator upgrade --include-major`.
Major version upgrades with breaking configuration changes will now automatically update your generator configuration, eliminating manual migration steps.

## 3.37.3

**`(fix):`** no-op: initiate bulk cli update

## 3.37.2

**`(fix):`** Fix `fern generate --preview` failing with permission errors when the `.preview` folder already exists. The CLI now properly handles read-only files (like `.git/objects`) by making them writable before deletion.

## 3.37.1

**`(fix):`** Push full channel message payload schemas through when creating type references; helps support 'bytes' for websocket methods.