diff --git a/@commitlint/types/src/rules.ts b/@commitlint/types/src/rules.ts
index 3bef376b76..739c1f61ab 100644
--- a/@commitlint/types/src/rules.ts
+++ b/@commitlint/types/src/rules.ts
@@ -77,7 +77,7 @@ export type RuleConfig<
 
 export type CaseRuleConfig<V = RuleConfigQuality.User> = RuleConfig<
 	V,
-	TargetCaseType
+	TargetCaseType | TargetCaseType[]
 >;
 export type LengthRuleConfig<V = RuleConfigQuality.User> = RuleConfig<
 	V,