diff --git a/Gemfile b/Gemfile
index 8be91ce2b6..a3f5a68360 100644
--- a/Gemfile
+++ b/Gemfile
@@ -183,7 +183,7 @@ group :development do
   gem 'rubocop-rails', '~> 2.23.1'
 
   # for opening letters
-  gem 'letter_opener', '~> 1.8.1'
+  gem 'letter_opener', '~> 1.9.0'
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
diff --git a/Gemfile.lock b/Gemfile.lock
index 113dc0ca59..0fbd4caadd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -252,9 +252,9 @@ GEM
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     language_server-protocol (3.17.0.3)
-    launchy (2.5.0)
-      addressable (~> 2.7)
-    letter_opener (1.8.1)
+    launchy (2.5.2)
+      addressable (~> 2.8)
+    letter_opener (1.9.0)
       launchy (>= 2.2, < 3)
     libdatadog (5.0.0.1.0-x86_64-linux)
     libddwaf (1.14.0.0.0-x86_64-linux)
@@ -599,7 +599,7 @@ DEPENDENCIES
   jwt (~> 2.8.0)
   kramdown (~> 2.4.0)
   kramdown-parser-gfm (~> 1.1.0)
-  letter_opener (~> 1.8.1)
+  letter_opener (~> 1.9.0)
   listen (~> 3.8.0)
   mail (~> 2.8.1)
   mail_form (~> 1.10.1)