diff --git a/activerecord/lib/active_record/connection_adapters.rb b/activerecord/lib/active_record/connection_adapters.rb
index 80720e4e71..f32ef34a64 100644
--- a/activerecord/lib/active_record/connection_adapters.rb
+++ b/activerecord/lib/active_record/connection_adapters.rb
@@ -13,6 +13,7 @@ module ActiveRecord
     autoload :PoolManager
     autoload :LegacyPoolManager
     autoload :SchemaCache
+    autoload :Deduplicable
 
     autoload_at "active_record/connection_adapters/abstract/schema_definitions" do
       autoload :IndexDefinition
diff --git a/activerecord/lib/active_record/connection_adapters/sql_type_metadata.rb b/activerecord/lib/active_record/connection_adapters/sql_type_metadata.rb
index 969867e70f..63f07b915d 100644
--- a/activerecord/lib/active_record/connection_adapters/sql_type_metadata.rb
+++ b/activerecord/lib/active_record/connection_adapters/sql_type_metadata.rb
@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require "active_record/connection_adapters/deduplicable"
-
 module ActiveRecord
   # :stopdoc:
   module ConnectionAdapters