Release v1.64.0 (#4293)

Author: buf-release-bot[bot]

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## [Unreleased]
+## [v1.64.0] - 2026-01-19
 
 - Fix LSP completion for options.
 - Add LSP document highlighting support.
@@ -1476,7 +1476,7 @@ buf check breaking proto --against .git#branch=master,subdir=proto
 
 Initial beta release.
 
-[Unreleased]: https://github.com/bufbuild/buf/compare/v1.63.0...HEAD
+[v1.64.0]: https://github.com/bufbuild/buf/compare/v1.63.0...v1.64.0
 [v1.63.0]: https://github.com/bufbuild/buf/compare/v1.62.1...v1.63.0
 [v1.62.1]: https://github.com/bufbuild/buf/compare/v1.62.0...v1.62.1
 [v1.62.0]: https://github.com/bufbuild/buf/compare/v1.61.0...v1.62.0

private/buf/bufcli/bufcli.go

@@ -15,4 +15,4 @@
 package bufcli
 
 // Version is the CLI version of buf.
-const Version = "1.63.1-dev"
+const Version = "1.64.0"