Psych is a YAML parser and emitter. Psych leverages libyaml[https://pyyaml.org/wiki/LibYAML] for its YAML parsing and emitting capabilities. In addition to wrapping libyaml, Psych also knows how to serialize and de-serialize most Ruby objects to and from the YAML format.
Required Ruby Version
>= 2.5.0
Authors
Aaron Patterson, SHIBATA Hiroshi, Charles Oliver Nutter
Versions
- 5.4.0 June 02, 2026 java (69 KB)
- 5.4.0 June 02, 2026 (38.5 KB)
- 5.3.1 December 17, 2025 java (68.5 KB)
- 5.3.1 December 17, 2025 (38.5 KB)
- 5.3.0 December 10, 2025 java (68.5 KB)
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