diff --git a/src/configs/typescript.ts b/src/configs/typescript.ts
index f2fdf3e..d5152d0 100644
--- a/src/configs/typescript.ts
+++ b/src/configs/typescript.ts
@@ -352,8 +352,14 @@ const typeAwareTypescriptRules: FlatConfigItem['rules'] = {
     },
   ],
   'ts/return-await': ['error', 'always'],
-  // @ts-expect-error - type definition is not up-to-date
-  'ts/switch-exhaustiveness-check': ['error', { requireDefaultForNonUnion: true }],
+  'ts/switch-exhaustiveness-check': [
+    'error',
+    // @ts-expect-error - type definition is not up-to-date
+    {
+      requireDefaultForNonUnion: true,
+      allowDefaultCaseForExhaustiveSwitch: false,
+    },
+  ],
   'ts/unbound-method': ['error', { ignoreStatic: false }],
   'ts/prefer-find': 'error',
 }