diff --git a/spec/integrations.yml b/spec/integrations.yml
index 0b260fca..72a83d18 100644
--- a/spec/integrations.yml
+++ b/spec/integrations.yml
@@ -7,7 +7,10 @@
   ruby_glob_pattern: '**/*_spec.rb'
   mutation_coverage: false
   mutation_generation: true
-  expected_errors: {}
+  expected_errors:
+    "#<ArgumentError: No valid target found for '?' >":
+    - core/matchdata/begin_spec.rb
+    - core/matchdata/end_spec.rb
   exclude:
     - core/string/casecmp_spec.rb
     - core/symbol/casecmp_spec.rb