diff --git a/ext/json/ext/generator/generator.c b/ext/json/ext/generator/generator.c
index 6bc3d4203..abeffeda1 100644
--- a/ext/json/ext/generator/generator.c
+++ b/ext/json/ext/generator/generator.c
@@ -1507,4 +1507,6 @@ void Init_generator(void)
     usascii_encindex = rb_usascii_encindex();
     utf8_encindex = rb_utf8_encindex();
     binary_encindex = rb_ascii8bit_encindex();
+
+    rb_require("json/ext/generator/state");
 }
diff --git a/lib/json/ext.rb b/lib/json/ext.rb
index 775e28a96..92ef61eae 100644
--- a/lib/json/ext.rb
+++ b/lib/json/ext.rb
@@ -15,9 +15,6 @@ module Ext
     else
       require 'json/ext/parser'
       require 'json/ext/generator'
-      unless RUBY_ENGINE == 'jruby'
-        require 'json/ext/generator/state'
-      end
       $DEBUG and warn "Using Ext extension for JSON."
       JSON.parser = Parser
       JSON.generator = Generator
diff --git a/test/json/ractor_test.rb b/test/json/ractor_test.rb
index e0116400f..646baddf3 100644
--- a/test/json/ractor_test.rb
+++ b/test/json/ractor_test.rb
@@ -9,7 +9,7 @@
 
 class JSONInRactorTest < Test::Unit::TestCase
   def test_generate
-    assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}", ignore_stderr: true)
+    assert_separately(%w[-rjson -Ilib -Iext], "#{<<~"begin;"}\n#{<<~'end;'}", ignore_stderr: true)
     begin;
       $VERBOSE = nil
       require "json"