# Firefly III v6.6.0

- Product: Firefly III (https://whatsnew.fyi/product/firefly-iii)
- Vendor: James Cole
- Date: 2026-04-19
- Version: v6.6.0
- Original notes: https://github.com/firefly-iii/firefly-iii/releases/tag/v6.6.0
- Permalink: https://whatsnew.fyi/product/firefly-iii/releases/v6.6.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

- **changed** — Updated many dependencies, amongst which are some backwards incompatible ones
- **security** — All OAuth-tokens and clients will be invalidated
- **fixed** — Fixed PrimaryAmountRecalculationService attempting to read property "data" on null
- **fixed** — Fixed rule engine firing twice in some cases
- **fixed** — Fixed new Piggy Banks accounts not being displayed properly grouped in the record creation form
- **fixed** — Fixed foreign currency account value in primary currency not updating after changing exchange rates on Dashboard
- **fixed** — Fixed running balance indicator detail through Liabilities accounts with multiple currencies
- **fixed** — Fixed very slow startup
- **fixed** — Fixed details regarding note records in the database and the Purge data from Firefly III function
- **fixed** — Fixed inability to set budget higher than 268435456
- **fixed** — Fixed email notifications ignoring user language preferences
- **fixed** — Fixed inability to add money to piggy bank
- **fixed** — Fixed Discord webhook domain changes
- **fixed** — Fixed Ntfy fields visibility when they don't work
- **fixed** — Fixed exception sending test email notification

Welcome to release v6.6.0 of Firefly III. It contains the latest fixes, translations and features. Docker users can find this release under the `latest` tag.

##### Changelog

<!-- summary: This releases upgrades many dependencies and will invalidate all of your OAuth-tokens and clients. -->

> [!WARNING]
> This releases will invalidate ALL of your OAuth-tokens and clients. Integrations with Home Assistant, AI-agents or the Firefly III Data Importer must be reconfigured with newly generated tokens. Old tokens and clients will no longer work. Sorry about that.

###### Changed

- Updated many dependencies, amongst which are some backwards incompatible ones. Sorry about your OAuth-tokens.

###### Fixed

- [Issue 12029](https://github.com/firefly-iii/firefly-iii/issues/12029) (PrimaryAmountRecalculationService - Attempt to read property "data" on null.) reported by @MihataBG
- [Issue 12030](https://github.com/firefly-iii/firefly-iii/issues/12030) (Rule engine fires twice in some cases) reported by @Robubble
- [Issue 12034](https://github.com/firefly-iii/firefly-iii/issues/12034) (The new Piggy Banks accounts are not being displayed properly grouped in the record creation form) reported by @jgmm81
- [Issue 12035](https://github.com/firefly-iii/firefly-iii/issues/12035) (Foreign currency account value in primary currency does not update after changing exchange rates (Dashboard)) reported by @gattacus
- [Issue 12043](https://github.com/firefly-iii/firefly-iii/issues/12043) (Detail in the Running balance indicator through the Liabilities accounts (multi currencies)) reported by @jgmm81
- [Discussion 12044](https://github.com/orgs/firefly-iii/discussions/12044) (Very slow startup) started by @pelaxa
- [Issue 12056](https://github.com/firefly-iii/firefly-iii/issues/12056) (Details regarding the Note records in the Database and the "Purge data from Firefly III" function) reported by @jgmm81
- [Issue 12063](https://github.com/firefly-iii/firefly-iii/issues/12063) (Cannot set budget higher than 268435456) reported by @Permagate
- [Issue 12066](https://github.com/firefly-iii/firefly-iii/issues/12066) (Email notifications ignore user language preferences) reported by @examosa
- [Issue 12070](https://github.com/firefly-iii/firefly-iii/issues/12070) (can't add money to piggy bank) reported by @4e868df3
- [Issue 12081](https://github.com/firefly-iii/firefly-iii/issues/12081) (Discord changes webhook domain) reported by @MinDBreaK
- [Issue 12083](https://github.com/firefly-iii/firefly-iii/issues/12083) (Hide or remove the Ntfy fields if they dont work.) reported by @OrakMoya
- [Issue 12107](https://github.com/firefly-iii/firefly-iii/issues/12107) (Exception sending test email notification) reported by @antrv

##### Installation and upgrade instructions

* Please read the installation instructions for [Docker](https://docs.firefly-iii.org/how-to/firefly-iii/installation/docker/), [Portainer](https://docs.firefly-iii.org/how-to/firefly-iii/installation/portainer/), [Kubernetes](https://docs.firefly-iii.org/how-to/firefly-iii/installation/kubernetes/) or [self-managed servers](https://docs.firefly-iii.org/how-to/firefly-iii/installation/self-managed/).
* Alternatively, read the upgrade instructions for [Docker](https://docs.firefly-iii.org/how-to/firefly-iii/upgrade/docker/), [Kubernetes](https://docs.firefly-iii.org/how-to/firefly-iii/upgrade/kubernetes/) or [self-managed servers](https://docs.firefly-iii.org/how-to/firefly-iii/upgrade/self-managed/)

The releases are signed, and you can verify them using the [Firefly III releases PGP key](https://docs.firefly-iii.org/explanation/more-information/signatures/).

##### Develop with Firefly III

Are you interested in (future) API changes to Firefly III, or other interesting dev-related updates? Sign up to the [Firefly III developer newsletter](https://firefly-iii.kit.com/dev) to receive low-frequency updates about the development of Firefly III.

##### Support Firefly III

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_[Truncated at 4000 characters — full notes: https://github.com/firefly-iii/firefly-iii/releases/tag/v6.6.0]_