diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 551097b4..70d1fa8a 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -128,9 +128,8 @@ GEM
     colored (1.2)
     concurrent-ruby (1.3.3)
     connection_pool (2.4.1)
-    countries (4.0.1)
-      i18n_data (~> 0.13.0)
-      sixarm_ruby_unaccent (~> 1.1)
+    countries (7.0.0)
+      unaccent (~> 0.3)
     crack (1.0.0)
       bigdecimal
       rexml
@@ -220,7 +219,6 @@ GEM
     httpclient (2.8.3)
     i18n (1.14.5)
       concurrent-ruby (~> 1.0)
-    i18n_data (0.13.0)
     io-console (0.7.2)
     irb (1.14.0)
       rdoc (>= 4.0.0)
@@ -443,7 +441,6 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    sixarm_ruby_unaccent (1.2.0)
     smart_properties (1.17.0)
     sprockets (4.2.1)
       concurrent-ruby (~> 1.0)
@@ -475,6 +472,7 @@ GEM
     tomorrowio_rb (0.0.3)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
+    unaccent (0.4.0)
     unicode-display_width (2.5.0)
     uniform_notifier (1.16.0)
     vcr (6.2.0)