diff --git a/Gemfile b/Gemfile
index 2f1aa412ef6ce5..adddce935eab54 100644
--- a/Gemfile
+++ b/Gemfile
@@ -130,7 +130,7 @@ group :development do
   gem 'binding_of_caller', '~> 1.0'
   gem 'bullet', '~> 6.1'
   gem 'letter_opener', '~> 1.7'
-  gem 'letter_opener_web', '~> 1.4'
+  gem 'letter_opener_web', '~> 2.0'
   gem 'memory_profiler'
   gem 'rubocop', '~> 1.23', require: false
   gem 'rubocop-rails', '~> 2.12', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 8417d3c6928079..97ea1561085804 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -327,10 +327,11 @@ GEM
       addressable (~> 2.7)
     letter_opener (1.7.0)
       launchy (~> 2.2)
-    letter_opener_web (1.4.1)
-      actionmailer (>= 3.2)
-      letter_opener (~> 1.0)
-      railties (>= 3.2)
+    letter_opener_web (2.0.0)
+      actionmailer (>= 5.2)
+      letter_opener (~> 1.7)
+      railties (>= 5.2)
+      rexml
     link_header (0.0.8)
     llhttp-ffi (0.4.0)
       ffi-compiler (~> 1.0)
@@ -719,7 +720,7 @@ DEPENDENCIES
   kaminari (~> 1.2)
   kt-paperclip (~> 7.0)
   letter_opener (~> 1.7)
-  letter_opener_web (~> 1.4)
+  letter_opener_web (~> 2.0)
   link_header (~> 0.0)
   lograge (~> 0.11)
   makara (~> 0.5)