Bukayo Saka celebrated his new Arsenal deal by opening the scoring in a crucial win at Wolves.
The 18-year-old, who signed a new long-term contract at the Emirates this week, struck his first Premier League goal to give the Gunners' European hopes a huge boost.
Substitute Alexandre Lacazette scored a late second as Arsenal closed the gap on sixth-placed Wolves to three points.
Manager Mikel Arteta continued to justify his hard-line stance on any player yet to buy into his beliefs, with Mesut Ozil and Matteo Guendouzi again missing.
Adama Traore chipped Wolves' best chance over as Nuno Espirito Santo's side's Champions League hopes took a hit.
The Wolves manager said: "Mistakes happen. What we have to look at and solve. It was a moment of concentration and we allowed ourselves to concede. We have to bounce back and reinvent ourselves."
Arsenal goalscorer Bukayo Saka said of the victory: "It is very big. We know how good Wolves are and how tough it wad going to be. We fought for every ball and it is good to build some momentum.
"It has been a week I will remember for my whole life. You can see the manager is building and that I can tie down my future here."
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