MEMORANDUM **

Robin Lee Sherwood appeals pro se from the district court’s summary judgment in favor of the defendants in his 42 U.S.C. § 1988 action alleging deliberate indifference to his safety when he was a pretrial detainee. We have jurisdiction under 28 U.S.C. § 1291. We review de novo the district court’s summary judgment, Toguchi v. Chung, 391 F.3d 1051, 1056 (9th Cir. 2004), and we affirm.

Sherwood claims that the defendants were deliberately indifferent when they double-celled him in the general population rather than placing him in protective custody because he had initiated the gang dropout process. Summary judgment was proper because Sherwood failed to raise a genuine issue of material fact as to whether the defendants were deliberately indifferent to an excessive risk to his safety. See Farmer v. Brennan, 511 U.S. 825, 837, 114 S.Ct. 1970, 128 L.Ed.2d 811 (1994) (requiring evidence that defendants actually knew of and disregarded a risk to a prisoner’s safety). Specifically, the uncon-troverted evidence demonstrated that Sherwood did not start the official debriefing and dropout process until 2007, well after the incident at issue during which he was attacked; that Sherwood requested that he not be placed in protective custody; and that the defendants did not have information indicating that Sherwood’s cellmate posed a risk of serious danger to Sherwood.

The additional material Sherwood submitted on appeal is not part of the appellate record and will not, therefore, be considered. See Fed. R.App. P. 10(a); Kirshner v. Uniden Corp. of Am., 842 F.2d 1074, 1077 (9th Cir. 1988) (“Papers not filed with the district court or admitted into evidence by that court are not part of the clerk’s record and cannot be part of the record on appeal.”).

AFFIRMED.