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We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-35621, 333-91783, 333-152032, 333-158870, 333-165978, 333-180400, 333-187802, 333-203319, 333-224823 and 333-231423) of Aerojet Rocketdyne Holdings, Inc. of our report dated February 15, 2023, except with respect to our opinion on internal control over financial reporting insofar as it relates to the effects of the matter discussed in the penultimate paragraph of Management's Report on Internal Control Over Financial Reporting, as to which the date is May 4, 2023, relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K/A.