For two years running, the International Consumer Electronics Show in Las Vegas has not had a single female keynote speaker, and this has some tech companies taking matters into their own hands.

The six top speakers slots at this year’s CES are filled by male CEOs, including Intel’s Brian Krzanich, Ford’s Jim Hackett, Huawei’s Richard Yu, Turner’s John Martin, Hulu’s Randy Freer and the Consumer Technology Association’s Gary Shapiro.

This has led to a flurry of criticism, and a response from tech companies who have organized all-female panels.

“Every year, CES is where the world looks to find the vision of the tech industry,” pointed out Sonos Chief Marketing Officer Joy Howard in a blogpost. “And this year, that vision is particularly clear: Zero female keynote speakers. No women in clear agenda-driving roles.”

On Tuesday, the smart speaker company hosted a panel of four “intimate and insightful discussions about tech, culture and leadership.” Dubbed the Tech Boom-Boom Room, the panels were led by a “diverse group of female leaders.”

Among the speakers were Danielle Lee, global head of partner solutions at Spotify; Lilian Rincon, director of product management for Google; Gayle Troberman, chief marketing officer at iHeartMedia; and Liat Ben-Zur, SVP of digital transformation at Philips.

Saidah Blount, brand activation manager for Sonos, participated in a session on ways to build safe communities for women and people of color to foster working relationships.

“There are places out there meant to exclude women,” Blount said. “It’s now our time to challenge that. We’ve got the time, we’ve got the technology – let’s just do it.”

Twitter will host its own event, #WeAreHere, on Wednesday at the Cosmopolitan hotel just down the street from CES. The event is set to feature Linda Boff, CMO of GE; Myrna Soto, corporate SVP and global CISO of Comcast; Kara Swisher, co-founder and executive editor of Recode; Padmasaree Warrior, CEO of NIO; Kimberly Bryant, founder of Black Girls Code; and Morgan DeBaun, co-founder and CEO of ‎Blavity.

Twitter CMO Leslie Berland will host the event.

“Hey CES, big respect for what you’ve built,” Berland tweeted on Dec. 3. “Please do better here. I’ve got a long list of amazing women to hit your stage.”

In a press release, CES boasted 28 women scheduled to speak at the conference, along with 26 men. It also said 15 keynote spots have been held by women in the last seven years.

“To keynote at CES, the speaker must head (president/CEO level) a large entity who has name recognition in the industry,” said Karen Chupka, senior VP, CES & Corporate Business Strategy for the CTA.

She continued, “As upsetting as it is, there is a limited pool when it comes to women in these positions. We feel your pain. It bothers us, too. The tech industry and every industry must do better.”

In response to the backlash, the CTA added two female leaders – Nancy Dubuc, president of A&E Networks, and Kristin Dolan, chief executive of 605 – to a panel on the future of video on Wednesday.