diff --git a/packages/plugin-eslint/src/lib/runner.integration.test.ts b/packages/plugin-eslint/src/lib/runner.integration.test.ts
index 8a58d60eb..ffe036223 100644
--- a/packages/plugin-eslint/src/lib/runner.integration.test.ts
+++ b/packages/plugin-eslint/src/lib/runner.integration.test.ts
@@ -91,5 +91,5 @@ describe('executeRunner', () => {
         },
       }),
     );
-  }, 15_000);
-});
+  });
+}, 20_000);
diff --git a/packages/utils/src/lib/merge-configs.ts b/packages/utils/src/lib/merge-configs.ts
index 975737506..61d5331c7 100644
--- a/packages/utils/src/lib/merge-configs.ts
+++ b/packages/utils/src/lib/merge-configs.ts
@@ -9,8 +9,8 @@ import type {
 export function mergeConfigs(
   config: CoreConfig,
   ...configs: Partial<CoreConfig>[]
-): Partial<CoreConfig> {
-  return configs.reduce(
+): CoreConfig {
+  return configs.reduce<CoreConfig>(
     (acc, obj) => ({
       ...acc,
       ...mergeCategories(acc.categories, obj.categories),