Semantic MediaWiki 5.1.0
Release date:	July 24, 2025
Previous version:	Semantic MediaWiki 5.1.0
Next version:	Semantic MediaWiki 6.0.0
Compatible with:	MW 1.39.0 - 1.43.1
Current version:
SMW 6.0.1

Version 5.1.0 of Semantic MediaWiki is the next feature release after the major Semantic MediaWiki 5.0.0 release. It is providing bug fixes, two new configuration parameters, and translation updates. See the English language RELEASE NOTES below on this page for further information.

Users are encouraged to upgrade as soon as possible.

Please refer to the help pages on installing or upgrading Semantic MediaWiki to get detailed instructions on how to do this.

Semantic MediaWiki 5.1.0

Released on July 24, 2025.

Summary

This is a minor release. Thus, it contains no breaking changes, only new features and fixes.

Like SMW 5.0.0, this version is compatible with MediaWiki 1.39 up to 1.43 and PHP 8.1 up to 8.4. For more detailed information, see the compatibility matrix.

SMW 5.1.0 brings two new configuration settings and enhances API outputs by including inverse properties. While this version also improves compatibility with MediaWiki 1.44, various issues remain, so this version is known to not yet support MediaWiki 1.44. We recommend SMW users stay on MediaWiki 1.43 LTS for now.

Upgrading

No need to run "update.php" or any other migration scripts.

Get the new version via Composer:

Step 1: if you are upgrading from SMW older than 5.0.0, ensure the SMW version in composer.local.json is ^5.1.0
Step 2: run composer in your MediaWiki directory: composer update --no-dev --optimize-autoloader

Get the new version via Git:

This is only for those who have installed SMW via Git.

Step 1: do a git pull in the SemanticMediaWiki directory
Step 2: run composer update --no-dev --optimize-autoloader in the MediaWiki directory

Changes

Added smwgSetParserCacheTimestamp setting to allow disabling invalidation of the parser cache (by Professional Wiki)
Added smwgSetParserCacheKeys setting to give control over how the parser cache key is built (by Professional Wiki)
Added support for serializing inverse (incoming) properties in API output. The API output now contains a direction key (direct or inverse) for each property (by Gesinn.it)