diff --git a/Gemfile b/Gemfile
index 8d77792..ff48a82 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 # A sample Gemfile
 source "https://rubygems.org"
-gem 'actionmailer', '3.2.14'
+gem 'actionmailer', '5.0.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 6b3180b..ff122b3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,56 +1,86 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (3.2.14)
-      actionpack (= 3.2.14)
-      mail (~> 2.5.4)
-    actionpack (3.2.14)
-      activemodel (= 3.2.14)
-      activesupport (= 3.2.14)
-      builder (~> 3.0.0)
+    actionmailer (5.0.0)
+      actionpack (= 5.0.0)
+      actionview (= 5.0.0)
+      activejob (= 5.0.0)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 2.0)
+    actionpack (5.0.0)
+      actionview (= 5.0.0)
+      activesupport (= 5.0.0)
+      rack (~> 2.0)
+      rack-test (~> 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (5.0.0)
+      activesupport (= 5.0.0)
+      builder (~> 3.1)
       erubis (~> 2.7.0)
-      journey (~> 1.0.4)
-      rack (~> 1.4.5)
-      rack-cache (~> 1.2)
-      rack-test (~> 0.6.1)
-      sprockets (~> 2.2.1)
-    activemodel (3.2.14)
-      activesupport (= 3.2.14)
-      builder (~> 3.0.0)
-    activesupport (3.2.14)
-      i18n (~> 0.6, >= 0.6.4)
-      multi_json (~> 1.0)
-    builder (3.0.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    activejob (5.0.0)
+      activesupport (= 5.0.0)
+      globalid (>= 0.3.6)
+    activesupport (5.0.0)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    builder (3.3.0)
+    concurrent-ruby (1.3.5)
+    crass (1.0.6)
+    date (3.4.1)
     erubis (2.7.0)
-    hike (1.2.3)
-    i18n (0.7.0)
-    journey (1.0.4)
-    mail (2.5.4)
-      mime-types (~> 1.16)
-      treetop (~> 1.4.8)
-    mime-types (1.25.1)
-    multi_json (1.12.1)
-    polyglot (0.3.5)
-    rack (1.4.7)
-    rack-cache (1.6.1)
-      rack (>= 0.4)
+    globalid (1.1.0)
+      activesupport (>= 5.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    loofah (2.24.1)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.12.0)
+    mail (2.8.1)
+      mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
+    mini_mime (1.1.5)
+    mini_portile2 (2.8.9)
+    minitest (5.25.5)
+    net-imap (0.5.10)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.2)
+      timeout
+    net-smtp (0.5.1)
+      net-protocol
+    nokogiri (1.18.10)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
+    racc (1.8.1)
+    rack (2.2.18)
     rack-test (0.6.3)
       rack (>= 1.0)
-    sprockets (2.2.3)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    tilt (1.4.1)
-    treetop (1.4.15)
-      polyglot
-      polyglot (>= 0.3.1)
+    rails-dom-testing (2.3.0)
+      activesupport (>= 5.0.0)
+      minitest
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.6.2)
+      loofah (~> 2.21)
+      nokogiri (>= 1.15.7, != 1.16.7, != 1.16.6, != 1.16.5, != 1.16.4, != 1.16.3, != 1.16.2, != 1.16.1, != 1.16.0.rc1, != 1.16.0)
+    thread_safe (0.3.6)
+    timeout (0.4.3)
+    tzinfo (1.2.11)
+      thread_safe (~> 0.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  actionmailer (= 3.2.14)
+  actionmailer (= 5.0.0)
 
 BUNDLED WITH
-   1.13.6
+   2.3.26