diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index fa1c4173..bb77d3d4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,6 +16,12 @@ jobs:
         ruby: ["3.0", "3.1", "3.2"]
         rails: ["6.1", "7.0", "7.1"]
         include:
+          - ruby: "3.1"
+            rails: "7.2"
+          - ruby: "3.2"
+            rails: "7.2"
+          - ruby: "3.3"
+            rails: "7.2"
           - ruby: "3.3"
             rails: "main"
 
diff --git a/lib/ember_cli/route_helpers.rb b/lib/ember_cli/route_helpers.rb
index 6fa54d09..3ef5bbd6 100644
--- a/lib/ember_cli/route_helpers.rb
+++ b/lib/ember_cli/route_helpers.rb
@@ -23,8 +23,8 @@ def mount_ember_app(app_name, to:, **options)
             }),
           }
 
-          get(to, redirect_if_missing_trailing_slash)
-          get(File.join(to, "(*rest)"), routing_options)
+          get(to, **redirect_if_missing_trailing_slash)
+          get(File.join(to, "(*rest)"), **routing_options)
         end
 
         mount_ember_assets(app_name, to: to)
@@ -34,7 +34,7 @@ def mount_ember_assets(app_name, to: "/")
         app = ::EmberCli[app_name]
 
         if app.mountable?
-          mount app.to_rack => to
+          mount app.to_rack, at: to
         end
       end
     end
diff --git a/spec/dummy/application.rb b/spec/dummy/application.rb
index 0b1880ec..fd14a1e3 100644
--- a/spec/dummy/application.rb
+++ b/spec/dummy/application.rb
@@ -33,6 +33,8 @@ class Application < Rails::Application
     config.secret_token = "SECRET_TOKEN_IS_MIN_30_CHARS_LONG"
     config.secret_key_base = "SECRET_KEY_BASE"
 
+    config.active_support.to_time_preserves_timezone = :zone
+
     def require_environment!
       initialize!
     end