Egg McMuffin lovers, take note: 24-hour access to McDonald's breakfast could be a thing of the (near) future.

McDonald's will begin testing an all-day breakfast menu in restaurants in the San Diego area next month, Terri Hickey, manager of McDonald’s U.S. media relations, told Mashable.

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"We look forward to learning from this test, and it’s premature to speculate on any outcomes," Hickey said. "We’re excited to serve our customers in this area some of McDonald’s great-tasting breakfast sandwiches, hash browns and other favorites all day long."

The 24-hour breakfast menu will include popular breakfast sandwiches, including the Egg McMuffin, as well as other items like McDonald's Hot Cakes and hash browns.

Increased competition in breakfast offerings from companies like Taco Bell could explain McDonald's potential plans to make breakfast an all-day affair. Taco Bell tested its own breakfast menu in 10 western states in 2012 and 2013 before rolling it out nationwide in 2014.

Currently, McDonald's breakfast lovers have until 10:30 a.m. (local times) to snag an Egg McMuffin on weekdays, and until as late as 11 a.m. on weekends in certain locations.

Not everyone is feeling the love for the fast food giant, however. As of Dec. 31, 2014, the company's net income fell to $1.1 billion from $1.4 billion a year earlier, CNBC reported.