WICHITA, Kan. (AP) — Gov. Sam Brownback’s chief of staff says tax revenue increase proposals will be part of a plan to plug a budget hole.

The Wichita Eagle reports that Jon Hummel also confirmed that education spending won’t remain untouched when Brownback unveils his budget plans for fiscal years 2016 and 2017 next week.

Brownback announced plans last month to fix a $279 million gap in this year’s budget mainly through transfers from other state funds. Analysts said the approach could cause a shortfall for the budget year that begins in July to grow from $436 million to $648 million.

The shortfalls arose after aggressive tax cuts were enacted at Brownback’s urging. Hummel says, “Revenue didn’t come in quite as was projected.”

The governor’s spokeswoman didn’t return messages from The Associated Press.