diff --git a/Gemfile b/Gemfile
index ad4e6c82a46..8c1cc92db0a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -87,7 +87,6 @@ gem 'zxcvbn', '0.1.9'
 group :development do
   gem 'better_errors', '>= 2.5.1'
   gem 'derailed_benchmarks'
-  gem 'guard-rspec', require: false
   gem 'irb'
   gem 'letter_opener', '~> 1.8'
   gem 'rack-mini-profiler', '>= 1.1.3', require: false
@@ -107,6 +106,7 @@ group :development, :test do
   gem 'pry-doc'
   gem 'pry-rails'
   gem 'psych'
+  gem 'rspec', '~> 3.12.0'
   gem 'rspec-rails', '~> 6.0'
   gem 'rubocop', '~> 1.55.1', require: false
   gem 'rubocop-performance', '~> 1.18.0', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 1484570a723..501904fdc06 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -299,7 +299,6 @@ GEM
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake
-    formatador (0.2.5)
     foundation_emails (2.2.1.0)
     fugit (1.8.1)
       et-orbi (~> 1, >= 1.2.7)
@@ -318,20 +317,6 @@ GEM
       thor (>= 0.14.1)
       webrick (>= 1.3)
     google-protobuf (3.24.0)
-    guard (2.16.2)
-      formatador (>= 0.2.4)
-      listen (>= 2.7, < 4.0)
-      lumberjack (>= 1.0.12, < 2.0)
-      nenv (~> 0.1)
-      notiffany (~> 0.0)
-      pry (>= 0.9.12)
-      shellany (~> 0.0)
-      thor (>= 0.18.1)
-    guard-compat (1.2.1)
-    guard-rspec (4.7.3)
-      guard (~> 2.1)
-      guard-compat (~> 1.1)
-      rspec (>= 2.99.0, < 4.0)
     hashdiff (1.0.1)
     hashie (4.1.0)
     heapy (0.2.0)
@@ -394,7 +379,6 @@ GEM
       yard (~> 0.9.25)
       zeitwerk (~> 2.5)
     lru_redux (1.1.0)
-    lumberjack (1.2.9)
     mail (2.8.1)
       mini_mime (>= 0.1.1)
       net-imap
@@ -411,7 +395,6 @@ GEM
     minitest (5.19.0)
     msgpack (1.7.2)
     multiset (0.5.3)
-    nenv (0.3.0)
     net-imap (0.3.7)
       date
       net-protocol
@@ -429,9 +412,6 @@ GEM
     nokogiri (1.14.5)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    notiffany (0.1.3)
-      nenv (~> 0.1)
-      shellany (~> 0.0)
     openssl (3.0.2)
     openssl-signature_algorithm (1.2.1)
       openssl (> 2.0, < 3.1)
@@ -630,7 +610,6 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
-    shellany (0.0.1)
     shoulda-matchers (4.5.1)
       activesupport (>= 4.2.0)
     simple_form (5.1.0)
@@ -756,7 +735,6 @@ DEPENDENCIES
   faraday-retry
   foundation_emails
   good_job (~> 3.0)
-  guard-rspec
   hashie (~> 4.1)
   http_accept_language
   i18n-tasks (~> 1.0)
@@ -807,6 +785,7 @@ DEPENDENCIES
   retries
   rotp (~> 6.1)
   rqrcode
+  rspec (~> 3.12.0)
   rspec-rails (~> 6.0)
   rspec-retry
   rspec_junit_formatter
diff --git a/Guardfile b/Guardfile
deleted file mode 100644
index 8586edb9f26..00000000000
--- a/Guardfile
+++ /dev/null
@@ -1,63 +0,0 @@
-# A sample Guardfile
-# More info at https://github.com/guard/guard#readme
-
-## Uncomment and set this to only include directories you want to watch
-# directories %w(app lib config test spec features) \
-#  .select{|d| Dir.exists?(d) ? d : UI.warning("Directory #{d} does not exist")}
-
-## Note: if you are using the `directories` clause above and you are not
-## watching the project directory ('.'), then you will want to move
-## the Guardfile to a watched dir and symlink it back, e.g.
-#
-#  $ mkdir config
-#  $ mv Guardfile config/
-#  $ ln -s config/Guardfile .
-#
-# and, you'll have to watch "config/Guardfile" instead of "Guardfile"
-
-# Note: The cmd option is now required due to the increasing number of ways
-#       rspec may be run, below are examples of the most common uses.
-#  * bundler: 'bundle exec rspec'
-#  * bundler binstubs: 'bin/rspec'
-#  * spring: 'bin/rspec' (This will use spring if running and you have
-#                          installed the spring binstubs per the docs)
-#  * zeus: 'zeus rspec' (requires the server to be started separately)
-#  * 'just' rspec: 'rspec'
-guard :rspec, cmd: ENV['GUARD_RSPEC_CMD'] || 'bundle exec rspec' do
-  require 'guard/rspec/dsl'
-  dsl = Guard::RSpec::Dsl.new(self)
-
-  # Feel free to open issues for suggestions and improvements
-
-  # RSpec files
-  rspec = dsl.rspec
-  watch(rspec.spec_helper) { rspec.spec_dir }
-  watch(rspec.spec_support) { rspec.spec_dir }
-  watch(rspec.spec_files)
-
-  # Ruby files
-  ruby = dsl.ruby
-  dsl.watch_spec_files_for(ruby.lib_files)
-
-  # Rails files
-  rails = dsl.rails(view_extensions: %w[erb])
-  dsl.watch_spec_files_for(rails.app_files)
-  dsl.watch_spec_files_for(rails.views)
-
-  watch(rails.controllers) do |m|
-    [
-      rspec.spec.call("routing/#{m[1]}_routing"),
-      rspec.spec.call("controllers/#{m[1]}_controller"),
-      rspec.spec.call("acceptance/#{m[1]}"),
-    ]
-  end
-
-  # Rails config changes
-  watch(rails.spec_helper)     { rspec.spec_dir }
-  watch(rails.routes)          { "#{rspec.spec_dir}/routing" }
-  watch(rails.app_controller)  { "#{rspec.spec_dir}/controllers" }
-
-  # Capybara features specs
-  watch(rails.view_dirs)     { |m| rspec.spec.call("features/#{m[1]}") }
-  watch(rails.layouts)       { |m| rspec.spec.call("features/#{m[1]}") }
-end
diff --git a/docs/local-development.md b/docs/local-development.md
index 7ad1eced699..86051607d6b 100644
--- a/docs/local-development.md
+++ b/docs/local-development.md
@@ -61,7 +61,6 @@ If not using macOS:
   Login.gov uses the following tools for our testing:
 
   - [RSpec](https://relishapp.com/rspec/rspec-core/docs/command-line)
-  - [Guard](https://github.com/guard/guard-rspec)
   - [Mocha documentation](https://mochajs.org/)
 
   To run our full test suite locally, use the following command:
@@ -92,24 +91,6 @@ If not using macOS:
   $ SHOW_BROWSER=true bundle exec rspec spec/features/
   ```
 
-### Speeding up local development and testing
-
-  To automatically run the test that corresponds to the file you are editing,
-  run `bundle exec guard` with the env var `GUARD_RSPEC_CMD` set to your preferred
-  command for running `rspec`. For example, if you use [Zeus](https://github.com/burke/zeus),
-  you would set the env var to `zeus rspec`:
-  ```console
-  GUARD_RSPEC_CMD="zeus rspec" bundle exec guard
-  ```
-
-  If you don't specify the `GUARD_RSPEC_CMD` env var, it will default to
-  `bundle exec rspec`.
-
-  We also recommend setting up a shell alias for running this command, such as:
-  ```console
-  alias idpguard='GUARD_RSPEC_CMD="zeus rspec" bundle exec guard'
-  ```
-
 ### Viewing email messages
 
   In local development, the application does not deliver real email messages. Instead, we use a tool