diff --git a/changelog/fix_an_error_when_using_old_json_gem.md b/changelog/fix_an_error_when_using_old_json_gem.md
new file mode 100644
index 00000000000..b36a8f3b448
--- /dev/null
+++ b/changelog/fix_an_error_when_using_old_json_gem.md
@@ -0,0 +1 @@
+* [#10745](https://github.com/rubocop/rubocop/issues/10745): Require JSON 2.3 or higher to fix an incompatible JSON API error. ([@koic][])
diff --git a/rubocop.gemspec b/rubocop.gemspec
index a7c08c3c25d..8716f8236fb 100644
--- a/rubocop.gemspec
+++ b/rubocop.gemspec
@@ -31,6 +31,7 @@ Gem::Specification.new do |s|
     'rubygems_mfa_required' => 'true'
   }
 
+  s.add_runtime_dependency('json', '~> 2.3')
   s.add_runtime_dependency('parallel', '~> 1.10')
   s.add_runtime_dependency('parser', '>= 3.1.0.0')
   s.add_runtime_dependency('rainbow', '>= 2.2.2', '< 4.0')