diff --git a/ruby.yaml b/ruby.yaml
index ba1c714..75b47d6 100644
--- a/ruby.yaml
+++ b/ruby.yaml
@@ -29,6 +29,7 @@ data:
             ruby:
                 # From ruby.spec Summary
                 rationale: An interpreter of object-oriented scripting language
+                multilib: [x86_64]
                 buildorder: 101
                 ref: stream-ruby-2.5
             rubygem-abrt: