Stephen Amell, Emily Bett Rickards Stephen Amell, Emily Bett Rickards

There may be some tension in the Foundry now that Sara has joined Team Arrow.

On Wednesday's Arrow (8/7c, The CW), Felicity (Emily Bett Rickards) starts to feel inadequate around Sara (Caity Lotz) — though in the exclusive sneak peek below, she swears to Diggle (David Ramsey) that she's not jealous over Sara's renewed relationship with Oliver (Stephen Amell).

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However, Felicity will feel the pressure to prove her worth after the Clock King (Robert Knepper) infiltrates the computer systems in the lair. How will Felicity react? Check out the sneak peek:

Arrow returns Wednesday at 8/7c on The CW.

(Full disclosure: is owned by CBS, one of The CW's parent companies.)