diff --git a/.rubocop.yml b/.rubocop.yml
index 104b0677c1..f1b05987d0 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -8,5 +8,6 @@
 # https://github.com/makersacademy/scaffolint
 #
 # Configure Rubocop to use the config file in the Scaffolint GitHub repo
+
 inherit_from:
-  - https://raw.githubusercontent.com/makersacademy/scaffolint/v1.1.0/.rubocop.yml
+  - https://raw.githubusercontent.com/makersacademy/scaffolint/v2.2.0/.rubocop.yml
diff --git a/.ruby-version b/.ruby-version
deleted file mode 100644
index 57cf282ebb..0000000000
--- a/.ruby-version
+++ /dev/null
@@ -1 +0,0 @@
-2.6.5
diff --git a/Gemfile b/Gemfile
index 41d90f2771..35de4a7f0e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,8 +1,13 @@
 source 'https://rubygems.org'
 
+ruby '3.0.2'
+
 group :test do
   gem 'rspec'
-  gem 'rubocop', '0.79.0'
   gem 'simplecov', require: false, group: :test
   gem 'simplecov-console', require: false, group: :test
 end
+
+group :development, :test do
+  gem 'rubocop', '1.20'
+end
diff --git a/Gemfile.lock b/Gemfile.lock
index 702287c377..66064703c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,55 +2,65 @@ GEM
   remote: https://rubygems.org/
   specs:
     ansi (1.5.0)
-    ast (2.4.0)
-    diff-lcs (1.3)
-    docile (1.3.2)
-    jaro_winkler (1.5.4)
-    parallel (1.19.1)
-    parser (2.7.0.3)
-      ast (~> 2.4.0)
+    ast (2.4.2)
+    diff-lcs (1.4.4)
+    docile (1.4.0)
+    parallel (1.20.1)
+    parser (3.0.2.0)
+      ast (~> 2.4.1)
     rainbow (3.0.0)
-    rspec (3.9.0)
-      rspec-core (~> 3.9.0)
-      rspec-expectations (~> 3.9.0)
-      rspec-mocks (~> 3.9.0)
-    rspec-core (3.9.1)
-      rspec-support (~> 3.9.1)
-    rspec-expectations (3.9.0)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-mocks (3.9.1)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-support (3.9.2)
-    rubocop (0.79.0)
-      jaro_winkler (~> 1.5.1)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rubocop (1.20.0)
       parallel (~> 1.10)
-      parser (>= 2.7.0.1)
+      parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.9.1, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 1.7)
-    ruby-progressbar (1.10.1)
-    simplecov (0.18.0)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.11.0)
+      parser (>= 3.0.1.1)
+    ruby-progressbar (1.11.0)
+    simplecov (0.21.2)
       docile (~> 1.1)
-      simplecov-html (~> 0.11.0)
-    simplecov-console (0.6.0)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-console (0.9.1)
       ansi
       simplecov
       terminal-table
-    simplecov-html (0.11.0)
-    terminal-table (1.8.0)
-      unicode-display_width (~> 1.1, >= 1.1.1)
-    unicode-display_width (1.6.1)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
+    terminal-table (3.0.1)
+      unicode-display_width (>= 1.1.1, < 3)
+    unicode-display_width (2.0.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   rspec
-  rubocop (= 0.79.0)
+  rubocop (= 1.20)
   simplecov
   simplecov-console
 
+RUBY VERSION
+   ruby 3.0.2p107
+
 BUNDLED WITH
-   2.1.4
+   2.2.26
diff --git a/check.sh b/check.sh
new file mode 100755
index 0000000000..1469749226
--- /dev/null
+++ b/check.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+
+# This script is used by Makers to ensure that the challenges stay up to date.
+# If you're a student, you don't need to run it. But you can if you like!
+
+set -Eeuo pipefail
+trap cleanup SIGINT SIGTERM ERR
+
+script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
+
+setup_colors() {
+  if [[ -t 2 ]] && [[ -z "${NO_COLOR-}" ]] && [[ "${TERM-}" != "dumb" ]]; then
+    NOFORMAT='\033[0m' RED='\033[0;31m' GREEN='\033[0;32m' ORANGE='\033[0;33m' BLUE='\033[0;34m' PURPLE='\033[0;35m' CYAN='\033[0;36m' YELLOW='\033[1;33m'
+  else
+    NOFORMAT='' RED='' GREEN='' ORANGE='' BLUE='' PURPLE='' CYAN='' YELLOW=''
+  fi
+}
+
+cleanup() {
+  trap - SIGINT SIGTERM ERR
+  die "${RED}Checks failed${NOFORMAT}"
+}
+
+msg() {
+  echo >&2 -e "${1-}"
+}
+
+die() {
+  local msg=$1
+  local code=${2-1} # default exit status 1
+  msg "$msg"
+  exit "$code"
+}
+
+setup_colors
+
+msg "${BLUE}Integrity check using Ruby version ${ORANGE}$(ruby -v)${NOFORMAT}"
+msg "${BLUE} • Installing bundler${NOFORMAT}"
+gem install bundler
+msg "${BLUE} • Running bundle install${NOFORMAT}"
+bundle install
+msg "${BLUE} • Running rspec${NOFORMAT}"
+bundle exec rspec
+msg "${BLUE} • Running rubocop${NOFORMAT}"
+bundle exec rubocop
+exit 0