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# 0.66.0 - March 2026

This release introduced a major change related to WAREHOUSE parameters `generation` and `resource_constraint`.

### Changes

* It is no longer possible to use parameter `resource_constraint` to specify warehouse generation using values `STANDARD_GEN_1` and `STANDARD_GEN_2`. Parameter `generation` should be used instead.

### Reason

This change is requires in order to support the upcoming change in bundle 2026\_02: <https://docs.snowflake.com/en/release-notes/bcr-bundles/2026_02/bcr-2225>

### How to adapt config?

Edit `warehouses.yaml` config file.

1. Find and replace values `resource_constraint: STANDARD_GEN_1` with `generation: 1`.
2. Find and replace values `resource_constraint: STANDARD_GEN_2` with `generation: 2`.

SnowDDL default warehouse generation is still 1. Warehouses without explicitly set generation remain on "generation 1" and are not affected by this change.