Victoria's current border bubble arrangements with NSW will become stricter from 11.59pm on Tuesday.
Health minister Martin Foley announced under the changes, residents in the NSW border bubble can only enter Victoria without a permit for six reasons.
They include for necessary goods and services including for medical care and getting tested, care and compassionate reasons, paid or voluntary work, education, getting a COVID-19 vaccination and for sport and exercise.
"Bubble residents can only cross the border without a permit for six reasons," Mr Foley said.
"You're not allowed to cross the border to visit a friend, go for a meal or go on a holiday."
Mr Foley said if a Victorian border bubble resident has travelled to NSW or a NSW border bubble resident enters Victoria for a non-essential reason, could be subject to a fine of up to $5,452.
"We don't make these changes lightly and this will have an impact on the border residents," he said.
"The current border bubble system is based on the pre Delta era of how we've managed the COVID-19 virus.
"We need to have our border bubble reflect the changes that Delta has brought to how to respond and manage to the COVID-19 pandemic.
"The current rules also predate the increasingly uncontrolled outbreak that we have seen in NSW.
"They predate the current lockdowns we are seeing."
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The six permitted reasons also apply to Victorian border bubble residents who plan to enter New South Wales.
They will need to have observed the permitted essential reasons for travel while in New South Wales if they wish to return to Victoria without a permit under the border bubble system.
Mr Foley reminded people they must keep their travel within reasonable limits.
"If you're from Albury, please don't shop in Wangaratta, Werribee or Warrnambool, if the essential reason for your travel can be attended to in Wodonga," he said.
Meanwhile, Queensland recorded 15 new COVID cases, with new cases acquired overseas.
Deputy Premier Steven Miles confirmed that south-east Queensland's lockdown has been extended until Sunday at 4pm.
"It's starting to become clear that the initial lockdown will be insufficient for the outbreak," Mr Miles said.
"So we're advising south-east Queenslanders in the 11 LGAs that the lockdown will be extended until 4:00pm on Sunday. That will make it an 8-day lockdown."
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