# Migrations
[see the source](https://github.com/daostack/arc/tree/master/contracts/Migrations.sol)


**Execution cost**: less than 20527 gas

**Deployment cost**: less than 112200 gas

**Combined cost**: less than 132727 gas

## Constructor






## Methods
### last_completed_migration()


**Execution cost**: less than 395 gas

**Attributes**: constant



Returns:


1. **output_0** *of type `uint256`*

--- 
### owner()


**Execution cost**: less than 432 gas

**Attributes**: constant



Returns:


1. **output_0** *of type `address`*

--- 
### setCompleted(uint256)


**Execution cost**: less than 20451 gas


Params:

1. **completed** *of type `uint256`*


--- 
### upgrade(address)


**Execution cost**: No bound available


Params:

1. **newAddress** *of type `address`*


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