diff --git a/Gemfile b/Gemfile
index 8cbee6d..f99f942 100644
--- a/Gemfile
+++ b/Gemfile
@@ -28,7 +28,7 @@ gem 'importmap-rails'
 gem 'sprockets-rails'
 gem 'pg_search'
 gem "pagy", "~> 6.0"
-gem 'simpleidn', '0.2.1'
+gem 'simpleidn', '0.2.3'
 gem 'faraday'
 gem 'dry-initializer', '~> 3.1.0'
 gem 'dry-validation'
diff --git a/Gemfile.lock b/Gemfile.lock
index 80c1f22..0dac9c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -467,8 +467,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    simpleidn (0.2.1)
-      unf (~> 0.1.4)
+    simpleidn (0.2.3)
     smart_properties (1.17.0)
     spring (4.1.1)
     sprockets (4.2.1)
@@ -502,9 +501,6 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unaccent (0.4.0)
-    unf (0.1.4)
-      unf_ext
-    unf_ext (0.0.8.2)
     unicode-display_width (2.5.0)
     uri (0.13.0)
     validate_email (0.1.6)
@@ -588,7 +584,7 @@ DEPENDENCIES
   rubocop-rails
   selenium-webdriver
   simplecov (= 0.21.2)
-  simpleidn (= 0.2.1)
+  simpleidn (= 0.2.3)
   spring
   sprockets-rails
   strong_migrations