(WTVO) — There has recently been a shortage of Lunchables, which is a popular pre-packaged meal that contains foods like cheese, crackers, candy, hot dogs, and pizza.

Fans of the convenient food product are disappointed and wondering why Lunchables aren’t available. Many parents have reached out to social media to voice their frustrations on the shortage.

“Is there a Lunchables shortage because every day that I’ve been in the stores around my way they have been completely out of them,” one person commented on Lunchables’ Instagram page.

Kraft Heinz, creator of the meal kits, told TODAY Food that the demand for Lunchables has reached an all-time high, with sales growing in double-digits for the first time in 5 years.

“Compared to 2019, nearly 2 million more households bought Kraft Heinz brands in the second quarter of 2021,” a spokesperson for Kraft Heinz said. “We are also seeing all-time high demand for many of our brands, including Lunchables, Lunchables is seeing double-digit growth for the first time in 5 years.”

The demand is so high and supply is so low, that Rouse Markets came up with its own version of Lunchables, The Wall Street Journal reported.

Kraft Heinz says they’re working to increase the number of Lunchables available in stores. They’re investing in supply chains and their teams are “working fast & furiously so our retailers and consumers can get more of the Kraft Heinz products they love,” they said.