diff --git a/rubocop.yml b/rubocop.yml
index 5cd43216..af1a7936 100644
--- a/rubocop.yml
+++ b/rubocop.yml
@@ -417,7 +417,7 @@ Style/ArgumentsForwarding:
   Enabled: false
 
 Style/ArrayIntersect:
-  Enabled: false
+  Enabled: true
 
 Style/BisectedAttrAccessor:
   Enabled: false
diff --git a/test/fixtures/full_config.yml b/test/fixtures/full_config.yml
index 69e44076..70efcad0 100644
--- a/test/fixtures/full_config.yml
+++ b/test/fixtures/full_config.yml
@@ -2323,7 +2323,7 @@ Style/ArrayCoercion:
   VersionAdded: '0.88'
 Style/ArrayIntersect:
   Description: Use `array1.intersect?(array2)` instead of `(array1 & array2).any?`.
-  Enabled: false
+  Enabled: true
   VersionAdded: '1.40'
 Style/ArrayJoin:
   Description: Use Array#join instead of Array#*.