# Testing
coverage==4.5.1                  # Test coverage
flake8==3.6.0                    # Python linting
mypy==0.630                      # Type checking

# Testing
coverage==4.5.1                  # Test coverage
flake8==3.6.0                    # Python linting
mypy==0.641                      # Type checking

Update mypy package to 0.641
Update mypy package to 0.641
