diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 59824c8..ec824d3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
       - name: Install Ruby and gems
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.3.4
+          ruby-version: 3.3.5
           bundler-cache: true
       - name: Set up database schema
         run: bin/rails db:schema:load
@@ -54,7 +54,7 @@ jobs:
       - name: Install Ruby and gems
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.3.4
+          ruby-version: 3.3.5
           bundler-cache: true
       - name: Set up database schema
         run: bin/rails db:schema:load
@@ -69,7 +69,7 @@ jobs:
       - name: Install Ruby and gems
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.3.4
+          ruby-version: 3.3.5
           bundler-cache: true
       - name: Security audit dependencies
         run: bundle exec bundler-audit --update
@@ -100,7 +100,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.3.4
+          ruby-version: 3.3.5
           bundler-cache: true
       - name: Set up Docker Buildx
         id: buildx
@@ -144,7 +144,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.3.4
+          ruby-version: 3.3.5
           bundler-cache: true
       - uses: webfactory/ssh-agent@v0.9.0
         with:
diff --git a/.github/workflows/kamal.yml b/.github/workflows/kamal.yml
index 0a693c4..a7cdbbb 100644
--- a/.github/workflows/kamal.yml
+++ b/.github/workflows/kamal.yml
@@ -26,6 +26,6 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.3.4
+          ruby-version: 3.3.5
       - name: Run KAMAL command
         run: ${{ github.event.inputs.command }}
diff --git a/.ruby-version b/.ruby-version
index a0891f5..fa7adc7 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.4
+3.3.5
diff --git a/.tool-versions b/.tool-versions
index 05668b7..1dd1998 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-ruby 3.3.4
+ruby 3.3.5
diff --git a/Dockerfile b/Dockerfile
index 8d1ca36..9d8c5ef 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.3.4
+ARG RUBY_VERSION=3.3.5
 ARG APP_VERSION=undefined
 FROM ruby:$RUBY_VERSION-slim AS base
 
diff --git a/Dockerfile.development b/Dockerfile.development
index c2495ae..97c3b6f 100644
--- a/Dockerfile.development
+++ b/Dockerfile.development
@@ -1,7 +1,7 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.3.4
+ARG RUBY_VERSION=3.3.5
 FROM ruby:$RUBY_VERSION-slim as base
 
 # Rails app lives here
diff --git a/Gemfile.lock b/Gemfile.lock
index 0ddcdc0..deaf2ba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -552,7 +552,7 @@ DEPENDENCIES
   yabeda-rails
 
 RUBY VERSION
-   ruby 3.3.4p94
+   ruby 3.3.5p100
 
 BUNDLED WITH
-   2.5.6
+   2.5.18
diff --git a/README.md b/README.md
index 767076c..82c5604 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ The software is still a work in progress. Expect huge variations.
 ## Develop
 
 I suggest you to use [asdf](https://asdf-vm.com/)
-Install ruby 3.3.4
+Install ruby 3.3.5
 
 Start the needed services with docker compose:
 
diff --git a/app/mailers/application_mailer.rb b/app/mailers/application_mailer.rb
index d84cb6e..ba861c0 100644
--- a/app/mailers/application_mailer.rb
+++ b/app/mailers/application_mailer.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
 class ApplicationMailer < ActionMailer::Base
-  default from: 'from@example.com'
+  default from: 'info@opengas.eu'
   layout 'mailer'
 end
diff --git a/config/environments/production.rb b/config/environments/production.rb
index d930c5f..2d939ae 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -3,6 +3,9 @@
 require 'active_support/core_ext/integer/time'
 
 Rails.application.configure do
+  # Prepare the ingress controller used to receive mail
+  # config.action_mailbox.ingress = :relay
+
   # Settings specified here will take precedence over those in config/application.rb.
 
   # Code is not reloaded between requests.
diff --git a/test/mailers/medical_certificate_mailer_test.rb b/test/mailers/medical_certificate_mailer_test.rb
index 648ddab..2200daa 100644
--- a/test/mailers/medical_certificate_mailer_test.rb
+++ b/test/mailers/medical_certificate_mailer_test.rb
@@ -11,7 +11,7 @@ class MedicalCertificateMailerTest < ActionMailer::TestCase
       email.deliver_now
     end
 
-    assert_equal ['from@example.com'], email.from
+    assert_equal ['info@opengas.eu'], email.from
     assert_equal [member.email], email.to
   end
 end
diff --git a/test/mailers/previews/receipt_mailer_preview.rb b/test/mailers/previews/receipt_mailer_preview.rb
new file mode 100644
index 0000000..08c87fe
--- /dev/null
+++ b/test/mailers/previews/receipt_mailer_preview.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+# Preview all emails at http://localhost:3000/rails/mailers/receipt_mailer
+class ReceiptMailerPreview < ActionMailer::Preview
+  def collaborator_receipt_email
+    expense = Expense.joins(:user).distinct.first
+    ReceiptMailer.with(expense:).collaborator_receipt_email
+  end
+
+  def member_receipt_email
+    ReceiptMailer.with(payment: Payment.first).member_receipt_email
+  end
+end