OPINION

John Lock, a federal prisoner, appeals from the order of the United States District Court for the Middle District of Pennsylvania granting the defendants’ motion to dismiss his civil rights action. The parties are familiar with the facts, so we will not set forth the case’s history in detail. In summary, Lock filed his complaint 1 pursuant to Bivens v. Six Unknown Named Agents of Fed. Bureau of Narcotics, 403 U.S. 388, 91 S.Ct. 1999, 29 L.Ed.2d 619 (1971), regarding events while he was housed at FCI-Schuylkill. Specifically, his claims are based on incidents on January 24, 2002 and May 8, 2003, when he was sexually assaulted by other inmates; in October 2002, when his request for a transfer to another prison was denied; and during 2002 and 2003, when he spent a prolonged period in segregation. Lock sought damages and injunctive relief. The defendants filed a motion to dismiss the complaint, arguing, inter alia, that Lock *159 failed to exhaust his administrative remedies, as required by 42 U.S.C. § 1997e(a). Lock filed a response. The District Court dismissed the complaint, finding that Lock failed to exhaust his administrative remedies. Lock appeals and has been granted leave to proceed in forma pauperis on appeal. We have jurisdiction under 28 U.S.C. § 1291.

Under the Prison Litigation Reform Act (“PLRA”), exhaustion of administrative remedies is required for all actions concerning prison conditions brought under federal law. 42 U.S.C. § 1997e(a); Spruill v. Gillis, 372 F.3d 218, 227 (3d Cir. 2004). In Spruill, we held that the PLRA required “proper” exhaustion, meaning that the inmate must follow the procedural requirements of the prison grievance system. Spruill, 372 F.3d at 228, 231. If the prisoner fails to follow the procedural requirements, then his claims are procedurally defaulted.

Under the Federal Bureau of Prisons (“BOP”) administrative remedy procedures, an inmate must first submit an attempt at informal resolution to his unit team. 28 C.F.R. § 542.13(a). If the concern is not resolved, the inmate may submit an administrative remedy request to the Warden, then to the BOP Regional Director, then to the BOP Central Office. 28 C.F.R. §§ 542.14-15. Informal resolution and submission of a formal written Administrative Remedy Request, on the appropriate form (BP-9), must be completed within twenty calendar days after the incident date. 28 C.F.R. § 542.14(a).

As relevant to this case, although the record contains documentation relating to the factual background of his other claims, Lock attempted to pursue administrative remedies with respect to only the May 8, 2003 sexual assault. The twenty-day period for submitting an administrative remedy request expired on May 28, 2003. However, Lock waited until June 4, 2003, when he submitted a request to prison staff, stating that he wished to begin the administrative remedy process regarding the May 8, 2003 incident. He filed a request for relief to the Northeast Regional Office. On June 18, 2003, the Regional Office rejected the submission, explaining that it had been submitted to the wrong level and should have been filed at the institution. Lock filed at the institutional level an unsuccessful informal resolution request, followed by a request for administrative remedy on July 31, 2003. The request was rejected as untimely. Lock then attempted to appeal to the Regional Office. He asserted that in June 2003, a prison officer asked him to defer his filing, and in July 2003, that same officer told him he had plenty of time to file his complaint. The Regional Office rejected the appeal as untimely. Lock attempted to appeal to BOP Central Office, which rejected the appeal as untimely, concurring with the prison’s and Regional Office’s reasons for rejecting Lock’s filings.

Upon careful review of the record, we agree with the District Court that Lock failed to exhaust his administrative remedies. We also agree that Lock’s reliance on a prison officer’s advice in June and July 2003 to delay his filings is unavailing, because the twenty-day period for filing an administrative remedy request had already passed by then. We discern no error in the dismissal of Lock’s complaint on the basis of failure to exhaust under section 1997e(a).

We will dismiss this appeal under 28 U.S.C. § 1915(e)(2)(B).