diff --git a/config/formats.ts b/config/formats.ts
index bd6a379703..4bce16b4e9 100644
--- a/config/formats.ts
+++ b/config/formats.ts
@@ -918,7 +918,7 @@ export const Formats: FormatList = [
 		mod: 'gen9',
 		searchShow: false,
 		ruleset: ['Standard OMs', 'Sleep Clause Mod', 'Min Source Gen = 9'],
-		banlist: ['Houndstone', 'Koraidon', 'Miraidon', 'Palafin', 'Covert Cloak', 'Baton Pass', 'Fake Out'],
+		banlist: ['Cloyster', 'Houndstone', 'Koraidon', 'Miraidon', 'Palafin', 'Covert Cloak', 'Baton Pass', 'Fake Out'],
 		restricted: ['Dynamic Punch', 'Flame Charge', 'Fury Cutter', 'Inferno', 'Nuzzle', 'Power Trip', 'Rapid Spin', 'Stored Power', 'Zap Cannon'],
 		validateSet(set, teamHas) {
 			const item = set.item;
@@ -1489,8 +1489,9 @@ export const Formats: FormatList = [
 		ruleset: ['Standard OMs', 'Sleep Moves Clause', 'Min Source Gen = 9'],
 		banlist: ['Flutter Mane', 'Koraidon', 'Miraidon', 'Slaking', 'Arena Trap', 'Magnet Pull', 'Moody', 'Shadow Tag', 'Baton Pass'],
 		restricted: [
-			'Baneful Bunker', 'Block', 'Copycat', 'Detect', 'Destiny Bond', 'Encore', 'Fairy Lock', 'Ingrain', 'Instruct', 'Mean Look', 'move:Metronome', 'Protect',
-			'Revival Blessing', 'Roar', 'Silk Trap', 'Spiky Shield', 'Sleep Talk', 'Shed Tail', 'Shell Smash', 'Substitute', 'Whirlwind',
+			'Baneful Bunker', 'Block', 'Copycat', 'Detect', 'Destiny Bond', 'Encore', 'Fairy Lock', 'Ingrain', 'Instruct', 'Mean Look',
+			'move:Metronome', 'Protect', 'Revival Blessing', 'Roar', 'Silk Trap', 'Spiky Shield', 'Sleep Talk', 'Shed Tail', 'Shell Smash',
+			'Substitute', 'Trick Room', 'Whirlwind',
 		],
 		onValidateTeam(team, format, teamHas) {
 			const problems = [];