v1.14.0

Summary

v1.14.0 has a hardfork, which will be activated at block height 29,275,561
(ETA is around 04/03/2024 00:52:05 AM UTC) on IoTeX mainnet.

All nodes must upgrade to this release, otherwise the node runs the risk of
not being able to sync with the IoTeX blockchain after other nodes have upgraded.

Note:
There's no change to the mainnet config.yaml and genesis.yaml. You only need to
restart your node with the new v1.14.0 image.

Version 1.14.0 has enabled two significant new features: IIP-24 Raise Block Gas
Limit to 50M and IIP-25 delegate endorsement.

With IIP-24, the block gas limit has now been raised to 50M, greatly enhancing
the processing capabilities of the IoTeX blockchain while ensuring its stability.
This enhancement allows the blockchain to achieve a maximum of 1000 TPS
(transactions per second), significantly speeding up transaction processing on
the blockchain, especially during times of network congestion.

The activation of IIP-25 introduces a novel governance model: it allows big
stakeholder to create a bucket for endorsing delegate. This would make delegate
management more flexible and encourage more enthusiastic projects to become IoTeX
delegates and actively participate in the IoTeX network operation, thereby
fostering the inclusivity of the IoTeX network and enhancing the diversity of the
ecosystem.

Other Improvements

v1.14.0 release also comes with a couple of improvements:

1. Improved performance for DB snapshot operation
2. Enabled web3js format for CandidateActivate and CandidateEndorsement
3. Make action pick order deterministic
4. Added more unit tests and end-to-end tests

Upgrade Priority

v1.14.0 comes with a hardfork, so all nodes must upgrade in order to keep
syncing with the IoTeX blockchain

Node type	Action
Delegate	Must upgrade
Fullnode	Must upgrade

Important Commits (not a complete list)

1. [tools] fix readme typos #4199
2. feat(api): add unit test for coreService #4193
3. feat(wsctl): add project configuration cmd #4195
4. [staking] testing endorsed bucket with existing staking actions #4186
5. use buffered channel #4197
6. feat(api): fix overflow in coreservice #4192
7. test: add unit test for module blockdao #4182
8. add e2etest for refactor fresh account conversion #4184
9. [context] enable delegate endorsement and refactor fresh account conversion at Tsunami height #4188
10. [staking] reject endorse action before HF activated #4187
11. [staking] Cannot withdraw endorsement if it is withdrawing #4179
12. [genesis] raise block gas limit to 50M starting Tsunami height #4181
13. [genesis] add Tsunami block height #4180
14. [account] revert ConvertFreshAccountToZeroNonceType func #4163
15. [evm] add transaction log for Suicide() #4171
16. [actpool] deterministic action pick order #4175
17. [api] remove height check for message batcher #4176
18. [action] Web3 for CandidateActivate and CandidateEndorsement #4140
19. clean up blockdao #4164
20. [staking] Candidate Register without Staking #4059
21. [staking] ActiveCandidate Exclude Candidate with Expired Endorsement #4062
22. [blockchain] add uni tests for runnable.go #4172
23. [staking] Fix typo error #4173
24. [staking] Cannot ChangeCandidate when Bucket is Endorsed #4133
25. [api] get method return msg #4142
26. [staking] Cannot Unstake if Bucket is Endorsed #4134
27. [db] Remove duplicate keys when WriteBatch #4155
28. fix test #4165
29. reset only if snapshots size exceed 10 #4152
30. [evm] add transient storage #4151
31. [staking] Replace ContainsSelfStakingBucket with isSelfStakeBucket #4139
32. add test #4138
33. [db] ResetSnapshots() performance improvement #4153
34. test(contractstaking): add unit tests #4126
35. update tests for rlp_tx.go #4145
36. feat(test): add unit test web3server_utils #4146
37. sgdindexer performance improvement #4148
38. [api] verify received tx hash is correct #4074
39. add test for actionByPrice #4135
40. fix benchmark #4127
41. [genesis] test coverage #4125
42. feat(test): add web3server unit test #4131
43. [staking] Handling CandidateEndorsement Action #4020
44. [staking] CandidateCenter Support for Missing and Changes of Self-Stake Bucket #4060
45. [staking] Handling CandidateActivate Action #4011
46. [refactor] Add bucket validation util functions #4019
47. [staking] Implement Endorsement Statemanager #4018

v1.13.1

Summary

v1.13.1 is the first maintenance release after the latest release v1.13.0. It comes with a bug fix and improvement of ioctl commandline tool.

Bug fix

With the launch of v1.13.0 some user reported issue with old wallet address (see issue #4156 for details). The issue is quickly identified to relate to nonce calculation for certain wallet address, and is properly fixed in this release.

Other Improvements

In v1.13.1, the ioctl commandline tool has enabled querying delegate's reward amount by name. As of now you can only query the reward amount by the actual reward address. With the functionality of querying by name, it makes delegate more convenient to check their reward and improves user experience.

Upgrade Priority

v1.13.1 does not have a hard-fork, but contains a bug fix to ensure prompt transaction processing. All delegate nodes and API nodes are recommended to upgrade to v1.13.1 in order to provide the best up-to-date service

Node type	Action
Delegate	Recommended
Fullnode	Not required
API node	Recommended

Important Commits (not a complete list)

1. [actpool] fix bug in worker.Reset() #4159
2. [ioctl] node reward unclaimed support name query #4150

v1.13.0

Summary

v1.13.0 has a hardfork, which will be activated at block height 28,516,681 (ETA is around 02/19/2024 00:58am UTC) on IoTeX mainnet.

All nodes must upgrade to this release, otherwise the node runs the risk of not being able to sync with the IoTeX blockchain after other nodes have upgraded.

Note:
There's no change to the mainnet config.yaml and genesis.yaml. You only need to restart your node with the new v1.13.0 image.

v1.13.0 marks a substantial advancement by upgrading IoTeX network's EVM to the latest Shanghai version. This upgrade brings in the new opcodes and improvements in Shanghai EVM, reducing gas cost with enhanced efficiency and reliability of smart contract execution, ultimately leading to a smoother and more cost-effective experience on the IoTeX network.

We are also excited to announce that v1.13.0 has enabled deterministic deployment functionality on the IoTeX network! This feature would deploy a proxy contract at a fixed address (same for all blockchains), and then it can be used to deploy any contract to a deterministic address using CREATE2. This ensures that any contract could be deployed consistently across different blockchain platforms to the same address, eliminates possible variations, and greatly enhance the predictability and reliability of smart contract deployment processes, providing developers with greater confidence in their deployments and facilitating seamless integration with other systems and protocols.

Other Improvements

v1.13.0 release also comes with a couple of improvements:

1. Supported javascript tracing for web3 api debug_traceCall
2. ioctl commandline tool added more w3bstream project commands, and set
   default endpoint to IoTeX mainnet
3. Add operator address into node's metrics reporting
4. Updated gas station logic to give a dynamic gas price suggestion
5. Increase max code deployment size to 48kB, same as Ethereum's limit

Upgrade Priority

v1.13.0 comes with a hardfork, so all nodes must upgrade in order to keep syncing with the IoTeX blockchain

Node type	Action
Delegate	Must upgrade
Fullnode	Must upgrade

Important Commits (not a complete list)

1. [actpool] skip adding accounts if pending acts is empty #4027
2. [action] Define CandidateSelfStake Action #4007
3. feat(ioctl): upgrade ws apis #4021
4. [actpool] fix typo for worker queue #4028
5. feat(ioctl): project register contract addr config #4039
6. feat(ioctl): ipfs endpoint and ipfs gateway config #4038
7. feat(ioctl): optimize w3bstream project subcommand #4013
8. [staking] Define Endorsement State #4017
9. [action] Define CandidateEndorsement Action #4016
10. [evm] remove NotCheckPutStateErrorOption() #4040
11. Bump golang.org/x/crypto from 0.14.0 to 0.17.0 #4022
12. feat(ioctl): bc version #4005
13. update github #4048
14. [api] web3 api debug_traceCall support javascript tracing #3931
15. [api] Get Pending Action by eth_getTransactionByHash #4025
16. [ioctl] set default endpoint to iotex mainnet #4050
17. [ioctl] ioctl ws code cmd support project config version #4042
18. [server] add operator address into node's metrics #4056
19. Improve action pool #4030
20. feat(ioctl): ioctl ws message with did vc token #4052
21. feat(ioctl): use ipfs cid as project config url #4053
22. chore: change default ws register contract address #4054
23. [log] mute some user request related logs #4033
24. Replace with sort.Slice #4034
25. [state] convert clean address to zero-nonce type #3991
26. [genesis] whitelist replay deployer #4009
27. [gasstation] Update gas station logic #4035
28. replace golint with go vet #4058
29. enable 48kB execution data limit, EIP-2930 tx, and deterministic deployment at Sumatra height #4070
30. [action] check calldata size instead of total size for 48kB init code limit #4075
31. [action] defer access list tx enabling #4129
32. [genesis] set Sumatra to activate at 02-19-2024 00:58AM UTC #4128

v1.12.1

Summary

v1.12.1 is the first maintenance release after the latest release v1.12.0. It comes with several important improvements and fixes for the API functionality.

This release introduces a significant enhancement to the transaction pool functionality. First, pending transactions that can soon be included in upcoming blocks will no longer be expired. Secondly, a mechanism has been implemented to replace less favorable pending transactions with more promising ones when the transaction pool approaches its capacity limit. This helps to ensure a higher likelihood of executing more successful transactions on the blockchain. With these improvement, we anticipate a relatively more stable block size, and legitimate transactions with higher gas prices stand a better chance of being swiftly processed on the blockchain, thereby enhancing the end user's experience.

Major Improvements

1. Correct signature's V value in returned web3 transaction, to fix the transaction hash calculation
2. Support "input" field in web3 request params to increase the compatibility with latest web3js standard
3. Set gRPC MaxConnectionIdle time to 5 minutes to improve the API server performance and responsiveness

Upgrade Priority

v1.12.1 does not have a hardfork, but contains important feature improvements to boost the transaction pool functionality. All delegate nodes and API nodes are strongly recommended to upgrade to v1.12.1 in order to provide the best up-to-date service

Node type	Action
Delegate	Recommended
Fullnode	Not required
API node	Recommended

Important Commits (not a complete list)

1. [api] correct signature's V value in returned web3 transaction #3952
2. [api] fix typo should use EVMNetworkID() #3960
3. [log] fix JSON log, better trace log #3914
4. [evm] refactor evm parameters #3958
5. [util] implement block time calculator #3951
6. remove ValidateRewardProtocol flag #3946
7. [config] add SumatraHeight #3962
8. [action] add NewEthSigner() and pass Signer as input to rlpRawHash() and rlpSignedHash() #3967
9. fix Dockerfile #3970
10. [api] support "input" field in web3 request params #3971
11. set gprc MaxConnectionIdle to 5 min #4023

v1.12.0

Summary

v1.12.0 has a hardfork, which will be activated at block height 26,704,441 (ETA is around 11/05/2023 23:59pm UTC) on IoTeX mainnet.

All nodes must upgrade to this release, otherwise the node runs the risk of not being able to sync with the IoTeX blockchain after other nodes have upgraded.

Note:
There's no change to the mainnet config.yaml and genesis.yaml. You only need to restart your node with the new image.

v1.12.0 marks a substantial advancement by upgrading the EVM to the Bellatrix release, surpassing the previous London release. Furthermore, our team is actively preparing for the integration with most recent Shanghai release, with more desired features planned for subsequent releases.

v1.12.0 has also enabled weighted vote counting for the Staking Bucket NFT, a feature newly launched in July with version 1.11.0. As a result, buckets created under this new feature will now enjoy an equal voting power and receive identical rewards as those of native buckets with equal balances.

Other Improvements

v1.12.0 release also comes with a couple of improvements:

1. Add ioctl bc delegate command, allowing users to conveniently access the detailed information of any delegate by name or operator address
2. Fix json unmarshal error when calling eth_getTransactionByHash via ethclient

Upgrade Priority

v1.12.0 comes with a hardfork, so all nodes must upgrade in order to keep syncing with the IoTeX blockchain

Node type	Action
Delegate	Must upgrade
Fullnode	Must upgrade

Important Commits (not a complete list)

1. [genesis] set Redsea to activate at 11-05-2023 23:59pm UTC #3949
2. [emv] enable Bellatrix at Redsea height #3942
3. [staking] fix weighted votes of contract staking bucket #3936
4. [config] Add RedseaHeight #3934

v1.11.2

Summary

v1.11.2 is a minor release, which fixes a format issue in the return data of
eth_getTransactionByHash API call.

Only API nodes need to upgrade to this release. Delegate nodes can continue to
run v1.11.1 normally, and are NOT required to upgrade.

Bug Fix

1. TransactionByHash returns error #3932

Upgrade Priority

v1.11.2 contains fix for an API return data format issue. Only API nodes need to
upgrade to this release.

Node type	Action
Delegate	Not needed
API node	Recommended

Commits in This Release

1. [api] fix json unmarshal error when calling TransactionByHash via ethclient #3933

v1.11.1

Summary

v1.11.1 is an important maintenance release, which fixes a bug in the system
staking contract. The issue was discovered in a pro-active manner, and
precautionary actions are taken to make sure that no actual harm/damage is done
to the system staking.

All nodes must upgrade to this release, otherwise the node runs the risk of
not being able to sync with the IoTeX blockchain after other nodes have upgraded.

Note:
There's no change to the latest config.yaml and genesis.yaml. You only need to
restart the node with the new image.

Other Improvements

v1.11.1 release also comes with a couple of improvements:

1. Enforce height check for system staking indexer to increase error detection
   and handling robustness
2. Fix revert message in eth_call
3. Fix panic: concurrent write to websocket connection
4. Fix staking action ToEthTx() panic
5. ioctl] action transfer now supports 0x address format
6. Added a new ioctl ins register command for INS service

Upgrade Priority

v1.11.1 contains a mandatory bug fix, so all nodes must upgrade in order to
keep syncing with the IoTeX blockchain

Node type	Action
Delegate	Must upgrade
Fullnode	Must upgrade

Important Commits (not a complete list)

1. [blockindex] return empty result before contract deploy height #3928
2. [blockindex] restrict height for sgdindexer during write and read operation #3926
3. [blockindex] restrict height for contract_staking_indexer during read operation #3927
4. [contractstaking] fix transaction for merge after create bucket #3924
5. [blockindex] introduce indexergroup #3906
6. [api] fix revert message in eth_call #3922
7. [ioctl] action transfer supports 0x address #3917
8. [action] simplify address generation #3913
9. [chainservice] build contract staking indexer only when staking protocol enabled #3886
10. [api] fix panic: concurrent write to websocket connection #3908
11. [staking] fix ToEthTx() panic #3910
12. [ioctl] support querying delegate by operator address #3904
13. [ioctl] Add INS register cmd #3903
14. [staking] make contract staking indexer nullable #3883
15. [iip15] improve sgd indexer test coverage #3893

v1.11.0

Summary

Version 1.11.0 includes a hardfork that will be activated on the IoTeX mainnet at block height 24,838,201 (ETA approximately 07/20/2023 11pm UTC). It is imperative that all nodes upgrade to this release. Failure to do so will result in the inability to sync with the IoTeX blockchain after the activation block.

Note:
Prior to restarting the node, you must upgrade to the latest config.yaml file. It contain new configurations required for v1.11.0 to function properly.

Instructions for configuring a node can be found here: https://github.com/iotexproject/iotex-bootstrap#join-mainnet

Breaking Changes

v1.11.0 enables 3 important features:

1. IIP-13 Represent Staking Buckets As Non-fungible Tokens
2. IIP-14 Account Abstraction
3. Enforce ChainID in transaction to prevent possible replay

IIP-13 Represent Staking Buckets As Non-fungible Tokens

IIP-13 supports native representation of staking buckets as Non-fungible Tokens
on the IoTeX blockchain, which opens opportunities for applications such as
Liquid Staking Derivatives (LSD), where these buckets can be traded or used as
collateral in other DeFi protocols. This in turn increases the overall staking
ratio and therefore enhances the degrees of security and decentralization of the
IoTeX blockchain.

IIP-14 Account Abstraction

IIP-14 Account abstraction is a ground-breaking proposal that aims to enhance
the IoTeX platform by abstracting various account operations and properties,
such as authentication, authorization, replay protection, gas payment, batching,
and atomicity. IIP-14, based on EIP-4337, makes IoTeX a more user-friendly and
secure platform, surpassing the limitations of externally owned accounts (EOAs).
For more information on the implementation details, please refer to ​our github
repo here

Enforce ChainID in transaction for enhanced transaction security

In v1.8 release, we added ChainID into transaction to distinguish transactions on
different networks. In this v1.11 release, the additional constraint is enforced
that each transaction must bear with it the correct ChainID (1 for mainnet, and 2
for testnet), and the default ChainID value 0 will be rejected. This would further
enhance the security of the IoTeX blockchain.

Other Improvements

v1.11 release also comes with a couple of small improvements:

1. Added an ioctl bc delegate command to retrieve the detailed info of a delegate
2. Added summary about the node status into console log output
3. Enabled message batch in API service to improving network data efficiency
4. Added an ioctl did service command
5. Added system action validation step in the block validation process

Upgrade Priority

v1.11.0 comes with a hardfork, so all nodes must upgrade in order to keep
syncing with the IoTeX blockchain

Node type	Action
Delegate	Must upgrade
Fullnode	Must upgrade

Important Commits (not a complete list)

1. [genesis] set Quebec to activate at 07-12-2023 11pm UTC #3895
2. [chainservice] check SystemStakingContract and SystemSGDContract address #3896
3. [iip-13] set mainnet contract address and height #3894
4. [ioctl] add bc delegate command #3891
5. [contract_indexer] improve robustness #3892
6. Process batch serialise concurrently #3877
7. [contract_indexer] fix vote bug when change delegate #3888
8. [contract_indexer] fix transfer event handling #3887
9. Log summary about the node status #3870
10. [api] ReadStateBucketByIndices return existing buckets #3878
11. [iip-13] contract indexer handle BucketExpanded event #3881
12. [staking] fix readStateCandidates returning empty #3882
13. [staking] validate address of contract indexer #3874
14. [staking] add BucketTypes web3 api #3876
15. implement composite buckets web3 api #3875
16. [actpool] forbid processing system action #3867
17. [iip-15] sgd indexer to ignore block less than start height #3873
18. [iip-15] sgdRegistry implementation #3845
19. [blockdao] introduce blockindexer with start height #3869
20. [IIP-13] contract indexer ignore blocks lower than height of contract deployment #3868
21. [config] enforce correct chainID and enable IIP-13 at Quebec height #3866
22. [IIP-13] enable contract staking indexer #3865
23. [IIP-13] combine native and LSD buckets #3859
24. [IIP-13] handle contract staking events to store buckets into index #3863
25. [IIP-13] introduce read contract staking buckets #3862
26. [IIP-13] contract staking struct definition #3861
27. [api] Enable message batching #3857
28. [iip-15] Sharing gas-fee for DApps #3844
29. [IIP-13] Combine native and liquid stake votes #3855
30. unitest for iip15-manager contract #3850
31. [context] remove EnableWeb3Rewarding flag #3852
32. [context] remove FixRewardErroCheckPosition flag #3851
33. [ioctl] add did service command #3848
34. refactor did ioctl to new resolver #3841
35. [state] validate system action layout #3838
36. [state] fix test and speedup validation #3842
37. [api] ServerV2.Stop() use correct context #3837

v1.10.1

v1.10.1 Release Note

Summary

v1.10.1 is a maintenance release, with couple of improvements:

1. Added ChatGPT code review, leveraging the latest AI technology to safeguard
   the code quality.
2. Implemented 2 web3js API: debug_traceCall and debug_traceTransaction which
   further increased our chain's compatibility with the Ethereum ecosystem.
3. Limited batch size for web3 API request, to help rate-limit the API endpoint and
   protect against potential DDoS attack.

Upgrade Priority

Upgrade is not necessary, nodes can continue to run normally.

Node type	Action
Delegate	Not required
Fullnode	Not required

Commits In This Release

1. [context] remove EnableWeb3Rewarding flag #3852
2. [context] remove FixRewardErroCheckPosition flag #3851
3. [api] ServerV2.Stop() use correct context #3837
4. add chatgpt code review #3824
5. [API] add limit batch request for web3 API #3822
6. [API] implement web3 API debug_traceCall #3813
7. [consensus] Add proposer role #3814
8. [API] implement web3 API debug_traceTransaction #3779
9. [state] remove unnecessary new(big.Int) #3778

v1.10.0

Summary

v1.10.0 has a hardfork, which will be activated at block height 22,991,401 (ETA is around 04/04/2023 11pm UTC) on IoTeX mainnet.

All nodes must upgrade to this release, or otherwise the node won't be able to sync with the IoTeX blockchain after the activation block.

Also we'll use this release opportunity to disable the auto-upgrader, since the auto-upgrader is a fixed script that cannot adapt perfectly well to each release scenario, and has caused a couple of failed upgrades in the past.

In the past, if you use the one-line upgrader tool to run your IoTeX node, please continue to use it to do the v1.10.0 upgrade. This time the script will turn off the auto-upgrader (if it was turned on before). Run the script below just as before.

sudo bash # If your docker requires root privilege
bash <(curl -s https://raw.githubusercontent.com/iotexproject/iotex-bootstrap/master/scripts/setup_fullnode.sh)

If you use the very long docker run command (like below) to run your IoTeX node, don't worry about the auto-upgrader since it is not turned on. Continue to upgrade your node using the v1.10.0 image:

docker stop iotex
docker rm iotex
docker run -d --restart on-failure --name iotex \
        -p 4689:4689 \
        -p 8080:8080 \
        -v=$IOTEX_HOME/data:/var/data:rw \
        -v=$IOTEX_HOME/log:/var/log:rw \
        -v=$IOTEX_HOME/etc/config.yaml:/etc/iotex/config_override.yaml:ro \
        -v=$IOTEX_HOME/etc/genesis.yaml:/etc/iotex/genesis.yaml:ro \
        iotex/iotex-core:v1.10.0 \
        iotex-server \
        -config-path=/etc/iotex/config_override.yaml \
        -genesis-path=/etc/iotex/genesis.yaml

Breaking Changes

v1.10.0 enables 2 important features:

1. Claim reward via web3.js protocol
2. Node status monitoring by p2p messaging

Claim reward via web3.js protocol

Similar to how we enabled sending transfer and staking actions via web3.js protocol, in v1.10.0 claim reward is enabled as well. Delegates can now send claim reward action using Metamask.

Node status monitoring by p2p messaging

Currently, the IoTeX node is relying on a pre-defined HTTP port to collect the real-time running status, such as the software version and blockchain height. This means that delegate nodes need to open up that HTTP port which might be a security risk, especially for nodes running on clour service provider. It also requires delegate nodes to expose their public IP address, which is not preferred due to both security and privacy concerns, and creates additional maintenance burden to manually update the IP address in case it changes.

In v1.10.0, a new node status monitoring solution is implemented based on the existing p2p network. By exchanging messages about their running status using the p2p network, delegate nodes no longer have to publicize their IP address nor open that specific HTTP port. In addition, the external IP address of a node can now freely change (like being assigned a new IP address after reboot) without worrying about status reporting/collection.

Also in upcoming new releases, we'll introduce more advanced node status monitor functionalities. For instance, an automatic alert service where delegates can register a webhook and receive notification when the node is becoming offline or entering probation.

Upgrade Priority

v1.10.0 comes with a hardfork, so all nodes must upgrade in order to keep syncing with the IoTeX blockchain

Node type	Action
Delegate	Must upgrade
Fullnode	Must upgrade

Important Commits (not a complete list)

1. [genesis] set Palau to activate at 04-04-2023 11pm UTC #3823
2. [nodeinfo] keep updating broadcast list #3818
3. [config] enable web3 staking and broadcast node info at Palau height #3810
4. [API] add batch size limit for jsonrpc #3805
5. implement isDelegate() in nodeinfo #3804
6. [nodeinfo] broadcast node's height info into p2p network #3744
7. [goMod] Upgrade iotex-proto to 0.5.13 #3799
8. [state] Remove receipt checking after runAction #3780
9. [pkg] Introduce batchWriter #3581
10. [action] Clean code in handleTransfer #3761
11. [state] Return err if receipt is nil #3759
12. [block] deprecate ConvertToBlockHeaderPb() #3774
13. [db] Optimize memory relocation in writeinfo #3763
14. [rewarding] add active web3 rewarding settings #3740
15. update docker build command #3751
16. complete web3 intergrity test #3743
17. [config] move config.API to api package #3739
18. [config] move config.Blocksync to blocksync package #3736
19. [action] validate candidate name #3705
20. [config] move config.Consensus to consensus package #3735
21. [api] web3 rewarding action #3691
22. [tests] add more cases for gas refund #3707
23. use config.GasStation instead of config.API #3721
24. remove nonce field #3714
25. move IsValidCandidateName to action package #3706