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Upgrade NNS Canister: um5iw-rqaaa-aaaaq-qaaba-cai to wasm with hash: 70f8bd40d022374622b34266d2c182d2a5b711d965f3bef9e505467a84c40bce

#144742 · Open · 4 d left · proposed Nov 6, 2026

Yes 94.6%0.8% of voting power has votedNo 5.4%
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Action
Install Code
Proposer neuron
47
Created
Voting ends
Nov 10, 2026 (in 4 d)

Summary

Proposal to upgrade the cycles ledger canister

Repository: https://github.com/dfinity/cycles-ledger.git

Git hash: 58f1d01ce1e5e41e61005f8103cc7560e9d81cc2

New compressed Wasm hash: 70f8bd40d022374622b34266d2c182d2a5b711d965f3bef9e505467a84c40bce

Upgrade args hash: 0fee102bd16b053022b69f2c65fd5e2f41d150ce9c214ac8731cfaf496ebda4e

Target canister: um5iw-rqaaa-aaaaq-qaaba-cai

Previous cycles ledger proposal: https://dashboard.internetcomputer.org/proposal/138595

Forum discussion: https://forum.dfinity.org/t/nns-updates-aggregation-thread/23551

Motivation

This proposal upgrades the cycles ledger to version 1.1.0, which fixes several bugs and adds support for new canister settings and ICRC-10.

The main reasons for the upgrade are the following fixes:

  • Stricter decoding of call arguments. The candid library is upgraded to 0.10.40, which fixes the decoding of subaccounts in call arguments.
  • Allowance refunds of failed delegated calls. The handling of allowance refunds after a failed withdraw_from or create_canister_from call is improved so that it takes changes to the allowance made by the owner into account.
  • Pruning of expired transactions. The work spent pruning expired deduplication entries in a single message is now bounded.
  • Correct error precedence. icrc1_transfer, icrc2_approve, and icrc2_transfer_from now return BadFee instead of InsufficientFunds when both apply.

In addition, the upgrade:

  • lets create_canister and create_canister_from set the canister settings wasm_memory_limit, wasm_memory_threshold, log_visibility, and environment_variables on the new canister,
  • adds support for ICRC-10 (icrc10_supported_standards) and returns the canonical document URLs for ICRC-103 and ICRC-106 in icrc1_supported_standards,
  • updates ic-cdk to 0.19 and the Rust toolchain to 1.91.1.

Release Notes

git log --format='%C(auto) %h %s' 29d98de5131918649a4c1cdd47fc176dea8770ef..58f1d01ce1e5e41e61005f8103cc7560e9d81cc2 --
58f1d01 chore(release): cycles-ledger-v1.1.0 (#188)
6669941 chore: add missing changelog entries and bump candid to 0.10.40 before releasing 1.1.0 (#186)
1e72b31 fix: bound the instructions spent pruning expired transactions (#184)
4f12dc4 chore: Add IntelliJ IDEA directory to .gitignore (#157)
f3517ce chore(deps): bump rustls from 0.23.35 to 0.23.46 (#185)
2faa00a chore: Move actions substitutions to `env:` for hardening (#183)
b1ea7da fix: do not reimburse an allowance the owner changed during a failed call (#182)
2703d36 chore(deps): bump quinn-proto from 0.11.14 to 0.11.17 (#181)
f921070 chore(deps): bump bytes from 1.11.0 to 1.12.1 (#169)
ea22d61 chore(deps): bump time from 0.3.44 to 0.3.55 (#170)
e54dca8 chore(deps): bump quinn-proto from 0.11.13 to 0.11.14 (#171)
3deed54 chore(deps): bump rustls-webpki from 0.103.8 to 0.103.14 (#177)
f44ee39 fix: align test_supported_standards expectations with canonical URLs (#180)
13858dc chore(deps): bump rand from 0.8.5 to 0.8.6 (#176)
7429361 fix: DEFI-2824: Use canonical ICRC-103 and ICRC-106 document URLs (#179)
ddc0bbf feat: DEFI-1902: Add support for ICRC-10 (#178)
301bae3 chore: pin GitHub Actions to commit SHAs (#174)
933e368 fix: check fee before funds (#173)
9431bd0 chore: update dependencies to allow new canister settings (#168)
dbebe79 test: FI-1857: Test upgrade and reinstall with index that handles burn and mint fees (#167)

Upgrade args

git fetch
git checkout 58f1d01ce1e5e41e61005f8103cc7560e9d81cc2
didc encode '()' | xxd -r -p | sha256sum

Wasm Verification

Verify that the hash of the gzipped WASM matches the proposed hash.

git fetch
git checkout 58f1d01ce1e5e41e61005f8103cc7560e9d81cc2
"./scripts/docker-build"
sha256sum ./cycles-ledger.wasm.gz

Official view: dashboard.internetcomputer.org/proposal/144742