Refer to the Upgrade Guide for tips on how to upgrade from 4.x.

Changes since 5.0.0-rc.1

Bug Fixes

Full Changelog: 5.0.0-rc.1...5.0.0

Replace TokenResponse generic with associated type (30ced32)
Return impl Future instead of Pin<Box<dyn Future>> to fix Send/Sync bounds (6e583bd)
Bump http to 1.0 and reqwest to 0.12 (408ecab)
Add conditional typestates (replacing Boolean typestates from 5.0.0-alpha.1) (85ea470)
Consolidate HTTP client errors into oauth2::HttpClientError and flatten exports (e.g., oauth2::reqwest instead of oauth2::reqwest::reqwest) (4391eed)
reqwest: Migrate to shared Error type and use thiserror's From impl by @MarijnS95 (#238)
Bump MSRV to 1.65 and institute a policy supporting Rust releases going back at least 6 months (same policy as openidconnect crate) (576f809)
Improve Display output of RequestTokenError::ServerResponse (96c6f9b)
Track Client endpoints statically via typestates (1d1f4d1)
Refactor crate into smaller private modules and make devicecode and revocation modules private (9d8f11a)
Add reqwest-blocking feature (da7d1c5)
Rename URI/URL getters and setters (4d55c26)
Add AsyncHttpClient and SyncHttpClient traits (23b952b)

Implement SecretType::into_secret (#272)
Add timing-resistant-secret-traits feature for PartialEq/Hash by @kate-shine (#232)
Derive Eq for types that already derive PartialEq (b19ad89)
Implement From instead of Into for newtypes (d9402c4)
Implement Display trait for URL types (8bd0ff1)

Inline format args (#270)
Update dev dependencies (#285)
Remove defunct sponsorship from README
Remove client secret from implicit flow example (#286)
Use --locked on MSRV build in CI
Allow base64 0.21 or 0.22 (#261)
Bump base64 to 0.21 (db0ea44)
Set minimum version of chrono to 0.4.31 (7b667fc)
Mention openidconnect crate in README (7b667fc)
Add note about spawn_blocking to docs (1fc8188)
Re-export curl as oauth2::curl and ureq as oauth2::ureq when the corresponding Cargo features are enabled (aff7471)
Replace map_err() conversions with a From call via the Try operator by @MarijnS95 (#239)
Fix comments about csrf_state by @ikehz (#245)
Add documentation about comparing secrets securely by @ikehz (#246)
Remove unused imports in examples by @frewsxcv (#207)
Make private prepare_request() methods infallible (8ef74ac)
Address clippy lints and clean up examples (d675e81)
Remove empty leading and trailing lines from doc comments (a8b5cf8)
Reorder and clean up imports (92c491a)
Add Upgrade Guide

Full Changelog: 4.4.2...5.0.0