v26.09

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Overdue by 25 day(s)

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Due by September 7, 2026

•Last updated Sep 25, 2026

Code Freeze: 5 August. First Release Candidate: 17 August. Release Date: 7 September

76% complete

Opening node stuck trying to RBF DELAYED_OUTPUT_TO_US transaction after being offline for a while
ElementsProject/lightning#8882 · opened on Feb 5, 2026 · v26.09
unittest/wallet/test/run-chain_moves_duplicate-detect: fatal_vfmt called!
ElementsProject/lightning#8605 · opened on Oct 15, 2025 · v26.09
4
LSP-Plugin: Add MPP support
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#8948 opened Mar 18, 2026 · Updated Sep 23, 2026
57
Test penalty transaction accounting from both the punisher and the cheater peer perspective
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#8860 opened Jan 22, 2026 · Updated Oct 1, 2026
3
Integrating VLS option on tests
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#8917 opened Feb 26, 2026 · Updated Oct 1, 2026
43
Changed: offers: offers that include offer_paths now omit the offer_issuer_id and sign with the last used blinded path alias' key by default
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#8238 opened Apr 15, 2025 · Updated May 11, 2026
25
splicescript: Turn on bitcoin addresses in splice script
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#8991 opened Mar 25, 2026 · Updated Aug 9, 2026
18
py: Add CI job to publish pyln-grpc-proto package to PyPI
ElementsProject/lightning#7929 · opened on Dec 10, 2024 · v26.09
2
FC due to Fulfilled HTLC $ID SENT_REMOVE_HTLC cltv $CLTV hit deadline without attempt to claim
ElementsProject/lightning#8899 · opened on Feb 12, 2026 · v26.09
10
BROKEN message when dual-funding flow is interrupted
ElementsProject/lightning#8902 · opened on Feb 16, 2026 · v26.09
1
Remotely triggered abort (SIGABRT, signal 6) crash with experimental-dual-fund enabled
ElementsProject/lightning#8945 · opened on Mar 16, 2026 · v26.09
7
pyln-testing raises ValueError if a wrong psbt is passed to openchannel_update
ElementsProject/lightning#8953 · opened on Mar 19, 2026 · v26.09
doc: modernize Alpine build instructions
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#9204 opened Jun 9, 2026 · Updated Aug 17, 2026
13
Attributable errors
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#8291 opened May 16, 2025 · Updated Aug 17, 2026
112
lsps-plugin: fail HTLC with TEMPORARY_CHANNEL_FAILURE on JIT channel errors
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#9271 opened Jul 1, 2026 · Updated Aug 27, 2026
Deprecate xpay-handle-pay
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#9254 opened Jun 24, 2026 · Updated Sep 4, 2026
13
doc: add project processes documentation
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#9321 opened Jul 16, 2026 · Updated Jul 27, 2026Draft
splice-script: Add more diagnostics and logs
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#8962 opened Mar 22, 2026 · Updated Jul 31, 2026
2
setconfig: replace fatal() with graceful error return on persistence failure
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#9356 opened Jul 27, 2026 · Updated Jul 31, 2026
5
openingd: fail channel gracefully when funding\_satoshis exceeds maximum Bitcoin supply
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#9357 opened Jul 27, 2026 · Updated Jul 31, 2026
3
build: set PYTHON in nix flake so that the docs build
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#9245 opened Jun 22, 2026 · Updated Aug 17, 2026
2
channeld: fix channel_ready retransmission after splice via funding_tx_index
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#9256 opened Jun 24, 2026 · Updated Aug 17, 2026
21
Pedantic fixes to build system (configure, Makefile)
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#8933 opened Mar 7, 2026 · Updated Sep 11, 2026
19
Fix for #8902
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#9394 opened Aug 9, 2026 · Updated Aug 17, 2026
7
lightningd: don't disconnect when sending error for unknown channel_reestablish
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#9427 opened Aug 17, 2026 · Updated Sep 30, 2026
4

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v26.09

Opening node stuck trying to RBF `DELAYED_OUTPUT_TO_US` transaction after being offline for a while

unittest/wallet/test/run-chain_moves_duplicate-detect: fatal_vfmt called!

LSP-Plugin: Add MPP support

Test penalty transaction accounting from both the punisher and the cheater peer perspective

Integrating VLS option on tests

Changed: offers: offers that include offer_paths now omit the offer_issuer_id and sign with the last used blinded path alias' key by default

splicescript: Turn on bitcoin addresses in splice script

py: Add CI job to publish `pyln-grpc-proto` package to PyPI

FC due to `Fulfilled HTLC $ID SENT_REMOVE_HTLC cltv $CLTV hit deadline` without attempt to claim

BROKEN message when dual-funding flow is interrupted

Remotely triggered abort (`SIGABRT`, signal 6) crash with `experimental-dual-fund` enabled

`pyln-testing` raises `ValueError` if a wrong psbt is passed to `openchannel_update`

doc: modernize Alpine build instructions

Attributable errors

lsps-plugin: fail HTLC with TEMPORARY_CHANNEL_FAILURE on JIT channel errors

Deprecate xpay-handle-pay

doc: add project processes documentation

splice-script: Add more diagnostics and logs

setconfig: replace fatal() with graceful error return on persistence failure

openingd: fail channel gracefully when funding\_satoshis exceeds maximum Bitcoin supply

build: set PYTHON in nix flake so that the docs build

channeld: fix channel_ready retransmission after splice via funding_tx_index

Pedantic fixes to build system (`configure`, `Makefile`)

Fix for #8902

lightningd: don't disconnect when sending error for unknown channel_reestablish

Issues