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Release 0.21.0 #420

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Merged
koic merged 1 commit into from
Jun 20, 2026
+14 −1
Merged

Release 0.21.0 #420

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13 changes: 13 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -7,6 +7,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

## [0.21.0] - 2026-06-20

### Added

- Support capability extensions per SEP-2133 (#405)
- Add range validation for `MCP::Annotations#priority` per MCP specification (#410)
- Isolate stateless requests in ephemeral sessions per SEP-2567 (#415)

### Changed

- Set OIDC `application_type` on Dynamic Client Registration per SEP-837 (#408)
- Fall back to legacy 2025-03-26 OAuth discovery for servers without PRM (#414)

## [0.20.0] - 2026-06-14

### Added
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2 changes: 1 addition & 1 deletion lib/mcp/version.rb
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@@ -1,5 +1,5 @@
# frozen_string_literal: true

module MCP
VERSION = "0.20.0"
VERSION = "0.21.0"
end