On January 13, 2017, it was announced that members Yoojin and Hyeran, the two remaining original members, will stop promotions with the group.
Member Yoojin decided to pursue studies abroad and will leave the group.
Meanwhile, member Hyeran will take a hiatus due to health concerns.
It was noted that no new members will be added to the group and will continue promotions as a five-member piece with members Minyoung, Yujeong, Eunji, Yuna and Hayun, for a possible return in February or March with a new release.
Brave Girls released their fourth mini album Rollin' on March 7.

On 17 August 2017, it was announced that Brave Girls members Yujeong, Eunji and Yuna will be participating in the idol rebooting show The Unit which premier on 28 October 2017.
Yujeong and Eunji passed the audition.
Eunji was eliminated in 45th place during the first elimination round while Yujeong was eliminated in 37th place during the second elimination round.

On August 11, 2018, the group released "Rollin' (New Version)", a rearranged version of the single of the same name released in 2017, as a gift to fans for the passionate support for the song in the last and a half year.
It was also announced that the group will promote as a 4-member piece for the time being, since member Hayun will take a break due to health reasons.

On August 5, 2020, it was announced that the group will make their comeback in almost three years with members Minyoung, Yujeong, Eunji and Yuna.
On August 14, the group released "We Ride" as a digital single.

On August 18, it was announced that the group will have a webtoon series set to be produced by Toontori and supported by the Ministry of Culture, Sports and Tourism of South Korea.
They are one of eight groups selected as part of the 2020 Hallyu Linked Support Project hosted by the Korea International Cultural Exchange Promotion Agency associated with Korea's Webtoon Industry Association.
On January 13, 2017, it was announced that members Yoojin and Hyeran, the two remaining original members, will stop promotions with the group. Member Yoojin decided to pursue studies abroad and will leave the group. Meanwhile, member Hyeran will take a hiatus due to health concerns. It was noted that no new members will be added to the group and will continue promotions as a five-member piece with members Minyoung, Yujeong, Eunji, Yuna and Hayun, for a possible return in February or March with a new release. Brave Girls released their fourth mini album Rollin' on March 7.
On 17 August 2017, it was announced that Brave Girls members Yujeong, Eunji and Yuna will be participating in the idol rebooting show The Unit which premier on 28 October 2017. Yujeong and Eunji passed the audition. Eunji was eliminated in 45th place during the first elimination round while Yujeong was eliminated in 37th place during the second elimination round.
On August 11, 2018, the group released "Rollin' (New Version)", a rearranged version of the single of the same name released in 2017, as a gift to fans for the passionate support for the song in the last and a half year. It was also announced that the group will promote as a 4-member piece for the time being, since member Hayun will take a break due to health reasons.
On August 5, 2020, it was announced that the group will make their comeback in almost three years with members Minyoung, Yujeong, Eunji and Yuna. On August 14, the group released "We Ride" as a digital single.
On August 18, it was announced that the group will have a webtoon series set to be produced by Toontori and supported by the Ministry of Culture, Sports and Tourism of South Korea. They are one of eight groups selected as part of the 2020 Hallyu Linked Support Project hosted by the Korea International Cultural Exchange Promotion Agency associated with Korea's Webtoon Industry Association.
Brave Girls