St. Petersburg, FL -- (Sports Network) - Minor League Baseball umpires have ended their season-long strike, agreeing to a new six-year contract that includes a salary increase of $100 per month.

The umpires had been on strike since the start of the season on April 6, but are now expected to return by June 12.

"We are happy to have reached a deal that will assure labor peace with our umpires through the 2011 season," said Minor League Baseball vice president Pat O'Conner in a release. "We look forward to continuing another great season of baseball without the distraction of a strike."

Minor League Baseball had been progressing this season with replacement umpires.

The new deal also increases the per diem for umpires in each year of the agreement, starting with a $3 per day -- or $90 per month -- raise this year.