Is it OK to pay my "health care sharing ministry premiums" from my HSA?

My wife and I are retired and no longer have a company-sponsored health plan.  We opted to go with Christian Healthcare Ministries, a health care sharing ministry. 

I assumed that it would be OK to pay my CHM premiums using HSA funds that we accumulated while working.  Now, I'm not so sure.  Can you help me out?

Thank you.