25w21a — release journal
What 25w21a changed for data packs, measured against 25w20a, the build before it. Released 2025-05-20; development build — not a release.
⚠ Entries removed
8 registry entries were removed. A pack that names one of them will fail to parse where it does.
Formats
| 25w20a | 25w21a | |
|---|---|---|
| Data pack format | 77.0 | 78.0 moved |
| Resource pack format | 61.0 | 62.0 moved |
| Data version | 4428 | 4429 |
Registries
16 entries added and 8 removed across 2 registries.
| Registry | Change | Added | Removed |
|---|---|---|---|
sound | changed | entity/leashknot/break, entity/leashknot/leash1, entity/leashknot/leash2, entity/leashknot/leash3, entity/leashknot/unleash1, entity/leashknot/unleash2, entity/leashknot/unleash3, mob/horse/armor_unequip, mob/horse/saddle_unequip, mob/llama/unequip | entity/leashknot/break1, entity/leashknot/break2, entity/leashknot/break3, entity/leashknot/place1, entity/leashknot/place2, entity/leashknot/place3 |
sound_event | changed | item.horse_armor.unequip, item.lead.break, item.lead.tied, item.lead.untied, item.llama_carpet.unequip, item.saddle.unequip | entity.leash_knot.break, entity.leash_knot.place |
The official notes
Read the 25w21a article on minecraft.net.
That article's technical changes are grouped under these headings — open it for the detail:
- Data Pack Version 78
- Dialogs
- Resource Pack Version 62
- Sounds
Minecraft Wiki page for 25w21a.
In the journal
← 25w20a · All builds · 1.21.6-pre1 →
Sources
- misode/mcmeta — 25w21a summary — formats and registries, generated from the game’s own data.
- minecraft.net — 25w21a — section names only.