Brevity may get a little less brief on Twitter.

The social media company said Tuesday that it will start testing tweets up to 280 characters long, twice the current limit. Some Twitter users have long urged the microblogging service to enable extended posts.

“We understand, since many of you have been tweeting for years, there may be an emotional attachment to 140 characters we felt it, too,” said Aliza Rosen, a product manager at Twitter, in a post on the company’s blog. “But we tried this, saw the power of what it will do, and fell in love with this new, still brief, constraint.”

The 280-character limit test comes as the number of new Twitter users has stalled. Twitter refreshed the site in June in a move to make its platform faster and easier to use, but the redesign was met with mixed reviews. Twitter did not say how many of its users would be allowed to experiment with the expanded character limit, saying that it’s available only to a small group.