My husband was lying about drinking again

My husband has had issues with alcohol addiction in the past (he'd never admit to this). A while back (3 years ago), I asked him to stop drinking so much, and he agreed. I caught him one night drinking behind my back. I confronted him and he lied, but I told him I knew he was lying because I counted the beers in the fridge and four of them were missing. He admitted and apologized and promised he wouldn't do it again. Lately, my husband has been drinking on and off, but I noticed it was every single night. I didn't like this. For our New Year's resolution, we decided we were going to limit our alcohol consumption. He was on board—no more drinking every night. The other night, I counted the beers in the fridge just to see if some were missing. It took a couple of days, but tonight, I discovered a few were missing along with a shot of vodka. He was passed out on the couch when I decided to wake him up and confront him (poor timing, but I couldn't wait). I asked him if he'd come to bed with me (when he drinks, he snores and I cannot sleep—it's a dead giveaway he's been drinking). He slurred a bit and said no. I asked if he had been drinking, but he snapped and said no. I went into our room to sleep, leaving him on the couch. I'm not sure if I'm overreacting or not. I just feel like I'm so honest with him about everything, and I expect the same honesty. He is a good husband in every other regard.