SIDNEY, Neb. (AP) — Regulators want more time to review Bass Pro’s proposed $4.5 billion acquisition of rival outdoor goods retailer Cabela’s.

The companies said Tuesday in a filing with the Securities and Exchange Commission that U.S. and Canadian antitrust regulators wanted at least a month of additional time to examine the deal.

The additional review could delay the deal’s closing, which was expected in the first half of next year.

The retail stores Cabela’s and Bass Pro operate tend to be in different parts of the country, but there is some overlap between the two companies.

Bass Pro has said it plans to maintain some operations in Cabela’s hometown of Sidney, Nebraska, but it isn’t clear how many jobs will be lost when the headquarters moves to Springfield, Missouri.