Narrative:

Enroute to ZZZ we received our original gate assignment. We briefed the taxi route during the approach briefing and the captain (ca) were both very familiar with ZZZ airport and taxi routes as we both come here often. We landed and had a short taxi ahead of us. We exited the runway and contacted ground. We were told [to wait]. I read this back and verbalized it to the ca and mentioned something about a gate change. I also noticed that we had a message from the station about a gate change while completing the after landing checklist (must have been inhibited during approach because we didn't receive the 'ACARS' EICAS message until after landing). While taxing in we taxied past K; we stopped the airplane and told ground that we missed K. They asked us to hold short of left while another aircraft moved; we then were instructed to taxi left; B; K to stand. I'm not sure why we missed K but I think it was a combination of confirmation bias and I fatigue. We had expected a certain route and even though it changed we still executed the original pan. I think we were both extremely tired and I honestly may have had a moment of micro sleep at the moment we taxied past K. This was an un-augmented flight that left ZZZ1 at XR00. By the time we were taxiing in it was XA00 body time with no rest or break. I slept well the night before and had an afternoon nap before the flight and I was still wiped out. Unaugmented flights to [foreign countries] are easy and safe when they leave ZZZ1 and land [late] body time. But for some reason the company only runs the late night flights without an international relief officer.

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Original NASA ASRS Text

Title: B767 flight crew reported that they taxied past the intended taxiway not realizing there was a gate change and due to fatigue.

Narrative: Enroute to ZZZ we received our original gate assignment. We briefed the taxi route during the approach briefing and the Captain (CA) were both very familiar with ZZZ airport and taxi routes as we both come here often. We landed and had a short taxi ahead of us. We exited the runway and contacted ground. We were told [to wait]. I read this back and verbalized it to the CA and mentioned something about a gate change. I also noticed that we had a message from the station about a gate change while completing the after landing checklist (must have been inhibited during approach because we didn't receive the 'ACARS' EICAS message until after landing). While taxing in we taxied past K; we stopped the airplane and told ground that we missed K. They asked us to hold short of L while another aircraft moved; we then were instructed to taxi L; B; K to stand. I'm not sure why we missed K but I think it was a combination of confirmation bias and I fatigue. We had expected a certain route and even though it changed we still executed the original pan. I think we were both extremely tired and I honestly may have had a moment of micro sleep at the moment we taxied past K. This was an un-augmented flight that left ZZZ1 at XR00. By the time we were taxiing in it was XA00 body time with no rest or break. I slept well the night before and had an afternoon nap before the flight and I was still wiped out. Unaugmented flights to [Foreign Countries] are easy and safe when they leave ZZZ1 and land [late] body time. But for some reason the company only runs the late night flights without an IRO.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.