It was estimated the increase would bring in more than $29 million in extra export earnings, he said.
The decision to raise the commercial catch limit brings it to 110,000 tonnes.
Mr Heatley said it had been as high as 250,000 tonnes but was gradually reduced to its current level of 90,000 tonnes in 2007 to allow the fishery to rebuild.
"The latest scientific research and monitoring shows a substantial increase in hoki stocks," Mr Heatley said.
"The scientific modelling shows a larger increase in hoki catches could have been justified, but I am taking a cautious approach to make sure we keep the stock at target levels over the long term."
Mr Heatley said the hoki fishery would continue to be closely monitored.
Catch limits are moved up and down on advice from the Ministry of Fisheries to take into account changes in the abundance of a fish stock and to make sure fishing is kept at sustainable levels.
The Green Party said the decision to increase the hoki catch was irresponsible.
"The Government has made a rash decision to fish for short-term cash rather than long-term sustainability," said co-leader Metiria Turei.
"This decision may damage our fish exports, and fishing jobs, because there are already international concerns about the sustainability of hoki."
Ms Turei said the fishery was recovering, but only slowly, and was far from healthy.
"It is naive to presume all is well again and raise the quota so soon."
NZPA
source: newshub archive
