
    Patricia BLACKBURN; et al., Plaintiffs-Appellants, v. State of WASHINGTON DEPARTMENT OF SOCIAL AND HEALTH SERVICES; et al., Defendants-Appellees.
    No. 13-35920.
    United States Court of Appeals, Ninth Circuit.
    Argued and Submitted July 10, 2015.
    Filed July 27, 2015.
    As Amended on Denial of Rehearing Aug. 31, 2015.
    Jesse A. Wing, Joseph R. Shaeffer, Mac-donald Hoague & Bayless, Seattle, WA, for Plaintiff-Appellant.
    Joseph Michael Diaz, Assistant Chief Counsel, Office of the Washington Attorney General, Christopher Lanese, Assistant Attorney General, Attorney General Office, Olympia, WA, for Defendant-Ap-pellee.
    Before: NGUYEN and FRIEDLAND, Circuit Judges and ZOUHARY, District Judge.
    
      
       The Honorable Jack Zouhary, District Judge for the U.S. District Court for the Northern District of Ohio, sitting by designation.
    
   MEMORANDUM

Nine employees of a state mental hospital in Washington (“Plaintiffs”) appeal the district court’s grant of summary judgment against them. We affirm.

Following entry of summary judgment, Plaintiffs brought suit in state court challenging the same race-based staffing practice at issue here. After a bench trial, the state court concluded that the duration of the staffing practice was limited to a single weekend. We give preclusive effect to that determination. See Christensen v. Grant Cty. Hosp. Dish No. 1, 152 Wash.2d 299, 96 P.3d 957, 960-961 (2004).

The individual defendants are entitled to qualified immunity with respect to Plaintiffs’ equal protection claims under 42 U.S.C. § 1983 because, at the time they acted, it would not have been clear to a reasonable official that avoiding the assignment of African-American employees to care for a particular violent patient, when done temporarily in response to an imminent safety threat posed by the patient to African-American staff, violated the Equal Protection Clause. See Ashcroft v. al-Kidd, 563 U.S. 731, 131 S.Ct. 2074, 2083-85, 179 L.Ed.2d 1149 (2011); Johnson v. California, 543 U.S. 499, 515, 125 S.Ct. 1141, 160 L.Ed.2d 949 (2005); Wittmer v. Peters, 87 F.3d 916, 918-21 (7th Cir.1996). Under the specific facts of this case, Plaintiffs’ claims under 42 U.S.C. §§ 1985 and 1986 also fail. See Griffin v. Breckenridge, 403 U.S. 88, 102, 91 S.Ct. 1790, 29 L.Ed.2d 338 (1971); Sanchez v. City of Santa Ana, 936 F.2d 1027, 1040 (9th Cir.1991).

Plaintiffs’ Title VII claim based on racial discrimination fails because a de minimis change in work assignments does not constitute an adverse employment action. See Robino v. Iranon, 145 F.3d 1109, 1110 (9th Cir.1998).

Plaintiffs have not demonstrated an entitlement to permanent injunctive relief because they have not shown an “immediate threat of substantial injury.” See Midgett v. Tri-Cty. Metro. Transp. Dist. of Or., 254 F.3d 846, 850 (9th Cir.2001). Similarly, Plaintiffs’ declaratory relief claim is not ripe for judicial resolution because Plaintiffs have failed to establish a likelihood of future injury. Hodgers-Durgin v. de la Vina, 199 F.3d 1037, 1044 (9th Cir.1999).

Plaintiff Blackburn’s retaliation claims under Title VII and the First Amendment fail because she did not suffer an adverse employment action. See Kortan v. Cal. Youth Auth., 217 F.3d 1104, 1112-13 (9th Cir.2000); Thomas v. City of Beaverton, 379 F.3d 802, 807, 811 (9th Cir.2004). Any challenge to the district court’s dismissal of Plaintiffs’ claim for retaliation under 42 U.S.C. § 1981 is waived due to Plaintiffs’ failure to address that claim in their appellate briefing. See, e.g., Dennis v. BEH-1 LLC, 520 F.3d 1066, 1069 (9th Cir.2008).

Plaintiff Dau’s hostile work environment claim fails because the hospital took “remedial measures reasonably calculated to end the harassment.” McGinest v. GTE Serv. Corp., 360 F.3d 1103, 1120 (9th Cir.2004).

AFFIRMED. 
      
       This disposition is not appropriate for publication and is not precedent except as provided by 9th Cir. R. 36-3.
     
      
      . To the extent any individual defendant misunderstood whether the patient’s threat pertained to all African-American staff instead of one particular staff member, the mistake was a reasonable one. See Rudebusch v. Hughes, 313 F.3d 506, 514 (9th Cir.2002) (explaining that the qualified immunity standard "allows ample room for reasonable error on the part of the official,” including “mistakes of fact and mistakes of law” (brackets omitted)).
     
      
      . Plaintiffs’ Motion to Correct the Record is DENIED because the document at issue was not before the district court. Defendants' Motion to Strike is GRANTED with respect to the reply brief's references to depositions in the state-court action, but DENIED in all other respects. Defendants' Motion for Judicial Notice is GRANTED with respect to the state-court’s findings of fact and conclusions of law and the state-court judgment. We DENY the remainder of Defendants' request for judicial notice, as well as Plaintiffs’ request for judicial notice, because additional state-court documents are not necessary to the determination of this case. See Santa Monica Food Not Bombs v. City of Santa Monica, 450 F.3d 1022, 1025 n. 2 (9th Cir.2006). Moreover, the documents proffered by plaintiffs are not judicially noticeable for the facts asserted therein because those facts are "subject to reasonable dispute,” and such disputes were resolved by the state court. See Fed.R.Evid. 201. Because we affirm on the merits, Defendants' Motion to Dismiss the Appeal is DENIED as moot.
     