diff --git a/build-tools/build-indexes b/build-tools/build-indexes
index c06d3a7ce..9153baff3 100755
--- a/build-tools/build-indexes
+++ b/build-tools/build-indexes
@@ -623,7 +623,7 @@ process.stdout.write("Building `data/teambuilder-tables.js`... ");
 
 		for (const tier of tierOrder) {
 			if (tier in {
-				OU: 1, AG: 1, Uber: 1, UU: 1, RU: 1, NU: 1, PU: 1, ZU: 1, NFE: 1, LC: 1, DOU: 1, DUU: 1,
+				OU: 1, UUBL: 1, AG: 1, Uber: 1, UU: 1, RU: 1, NU: 1, PU: 1, ZU: 1, NFE: 1, LC: 1, DOU: 1, DUU: 1,
 				"(DUU)": 1, New: 1, Legal: 1, Regular: 1, "Restricted Legendary": 1, "CAP LC": 1,
 			}) {
 				let usedTier = tier;
diff --git a/play.pokemonshowdown.com/src/battle-dex-search.ts b/play.pokemonshowdown.com/src/battle-dex-search.ts
index 93ddfa8ca..c9b7a9bc2 100644
--- a/play.pokemonshowdown.com/src/battle-dex-search.ts
+++ b/play.pokemonshowdown.com/src/battle-dex-search.ts
@@ -1047,6 +1047,7 @@ class BattlePokemonSearch extends BattleTypedSearch<'pokemon'> {
 				});
 			}
 		} else if (format === 'ou') tierSet = tierSet.slice(slices.OU);
+		else if (format === 'uubl') tierSet = tierSet.slice(slices.UUBL);
 		else if (format === 'uu') tierSet = tierSet.slice(slices.UU);
 		else if (format === 'ru') tierSet = tierSet.slice(slices.RU || slices.UU);
 		else if (format === 'nu') tierSet = tierSet.slice(slices.NU || slices.RU || slices.UU);