Emile Smith Rowe's second-half goal was enough to give us victory in Mikel Arteta's 100th game in charge.
We had to work hard for all three points though, after a missed penalty in the first half and disallowed goals either side of the break.
After a minute's silence ahead of Remembrance Sunday next week, we made a promising start at the Emirates.
Ainsley Maitland-Niles was the only change to the side that beat Leicester last weekend, replacing the injured Thomas Partey in midfield. And his clever pass to Alexandre Lacazette inside the box led to us having the ball in the net after just seven minutes, but it was ruled out by VAR.