diff --git a/Gemfile b/Gemfile
index 89356336e..bf2de9637 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,6 +21,7 @@ group :development do # rubocop:disable Metrics/BlockLength
   gem 'pry', '>= 0.14'
   gem 'rails'
   gem 'rake', '>= 13.0'
+  gem 'rdoc', '< 8', platform: 'jruby'
   gem 'reline'
   gem 'rspec', '~> 3.12'
   gem 'rubocop', '>= 1.0'
diff --git a/gemfiles/rails_7.1.gemfile b/gemfiles/rails_7.1.gemfile
index 9f306e288..0c47618a1 100644
--- a/gemfiles/rails_7.1.gemfile
+++ b/gemfiles/rails_7.1.gemfile
@@ -19,6 +19,7 @@ group :development do
   gem "pry", ">= 0.14"
   gem "rails", "~> 7.1.0"
   gem "rake", ">= 13.0"
+  gem "rdoc", "< 8", platform: "jruby"
   gem "reline"
   gem "rspec", "~> 3.12"
   gem "rubocop", ">= 1.0"
diff --git a/gemfiles/rails_7.2.gemfile b/gemfiles/rails_7.2.gemfile
index 8556ef881..4141c2eba 100644
--- a/gemfiles/rails_7.2.gemfile
+++ b/gemfiles/rails_7.2.gemfile
@@ -19,6 +19,7 @@ group :development do
   gem "pry", ">= 0.14"
   gem "rails", "~> 7.2.0"
   gem "rake", ">= 13.0"
+  gem "rdoc", "< 8", platform: "jruby"
   gem "reline"
   gem "rspec", "~> 3.12"
   gem "rubocop", ">= 1.0"
diff --git a/gemfiles/rails_8.0.gemfile b/gemfiles/rails_8.0.gemfile
index bca7946d6..08f5cfeb2 100644
--- a/gemfiles/rails_8.0.gemfile
+++ b/gemfiles/rails_8.0.gemfile
@@ -19,6 +19,7 @@ group :development do
   gem "pry", ">= 0.14"
   gem "rails", "~> 8.0.0"
   gem "rake", ">= 13.0"
+  gem "rdoc", "< 8", platform: "jruby"
   gem "reline"
   gem "rspec", "~> 3.12"
   gem "rubocop", ">= 1.0"
diff --git a/gemfiles/rails_8.1.gemfile b/gemfiles/rails_8.1.gemfile
index 49874b827..f11221e60 100644
--- a/gemfiles/rails_8.1.gemfile
+++ b/gemfiles/rails_8.1.gemfile
@@ -19,6 +19,7 @@ group :development do
   gem "pry", ">= 0.14"
   gem "rails", "~> 8.1.0"
   gem "rake", ">= 13.0"
+  gem "rdoc", "< 8", platform: "jruby"
   gem "reline"
   gem "rspec", "~> 3.12"
   gem "rubocop", ">= 1.0"