Experimental: mHealth application

Study participants, while being stabilized on buprenorphine, will download and engage with the developed mHealth application, completing daily electronic sleep diaries for the next 6 weeks. Each week, they will be asked to complete a short assessment of their experiences from the previous week and their current insomnia severity.

Experimental: Control Group

Participants in the control group will receive a simplified version of the app with sleep hygiene (SH) instructions and will be required to complete daily electronic sleep diaries for the next 6 weeks. The SH condition will utilize the same application and entail the same daily and weekly logs, but with the didactic material replaced by detailed education about SH strategies. Each week, participants will be asked to complete a brief assessment of their experiences from the previous week and their current insomnia severity.