diff --git a/Gemfile b/Gemfile
index bdda4c9a7..ebbfb69cb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -20,6 +20,7 @@ gem "bcrypt", "~> 3.1.7"
 gem "rqrcode"
 
 group :development, :test do
+  gem "debug"
   gem "brakeman", require: false
   gem "rubocop-rails-omakase", require: false
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index f097342ab..614910582 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,6 +126,9 @@ GEM
     connection_pool (2.4.1)
     crass (1.0.6)
     date (3.3.4)
+    debug (1.9.2)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
     drb (2.2.1)
     erubi (1.13.0)
     globalid (1.2.1)
@@ -319,6 +322,7 @@ DEPENDENCIES
   bootsnap
   brakeman
   capybara
+  debug
   importmap-rails
   propshaft
   puma (>= 5.0)
@@ -335,4 +339,4 @@ RUBY VERSION
    ruby 3.3.4p94
 
 BUNDLED WITH
-   2.5.11
+   2.5.21