diff --git a/Gemfile b/Gemfile
index 5cb4f78..ac02287 100644
--- a/Gemfile
+++ b/Gemfile
@@ -45,6 +45,8 @@ gem "prawnto_2",  :require => "prawnto"
 
 gem "prawn-table"
 
+gem "rack", "~> 2"
+
 gem "rails", ">= 7.1", "<7.2"
 
 gem "rails-i18n"
diff --git a/Gemfile.lock b/Gemfile.lock
index 10f1016..2120514 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -283,14 +283,14 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.7.3)
-    rack (3.0.8)
-    rack-session (2.0.0)
-      rack (>= 3.0.0)
+    rack (2.2.8)
+    rack-session (1.0.2)
+      rack (< 3)
     rack-test (2.1.0)
       rack (>= 1.3)
-    rackup (2.1.0)
-      rack (>= 3)
-      webrick (~> 1.8)
+    rackup (1.0.0)
+      rack (< 3)
+      webrick
     rails (7.1.3)
       actioncable (= 7.1.3)
       actionmailbox (= 7.1.3)
@@ -442,6 +442,7 @@ DEPENDENCIES
   prawn-table
   prawnto_2
   puma
+  rack (~> 2)
   rails (>= 7.1, < 7.2)
   rails-i18n
   redcarpet
@@ -464,4 +465,4 @@ RUBY VERSION
    ruby 3.2.0p0
 
 BUNDLED WITH
-   2.5.4
+   2.5.6
diff --git a/config/application.rb b/config/application.rb
index f462012..f670dca 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -11,7 +11,7 @@
 # require "action_mailbox/engine"
 # require "action_text/engine"
 require "action_view/railtie"
-# require "action_cable/engine"
+require "action_cable/engine"
 require "rails/test_unit/railtie"