diff --git a/Gemfile b/Gemfile
index 8502a53ae..eec0e26c8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,6 @@ gem "plek"
 gem "rack_strip_client_ip"
 gem "rails-controller-testing"
 gem "rails-i18n"
-gem "rails_translation_manager"
 gem "sassc-rails"
 gem "slimmer"
 gem "uglifier"
@@ -22,13 +21,13 @@ group :development, :test do
   gem "govuk_test"
   gem "jasmine"
   gem "jasmine_selenium_runner"
+  gem "rails_translation_manager"
   gem "rubocop-govuk"
 end
 
 group :development do
   gem "better_errors"
   gem "binding_of_caller"
-  gem "i18n-tasks"
   gem "pry"
   gem "wraith"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 1b43850f7..7e7aa585f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -163,7 +163,7 @@ GEM
     http-accept (1.7.0)
     http-cookie (1.0.4)
       domain_name (~> 0.5)
-    i18n (1.8.10)
+    i18n (1.8.11)
       concurrent-ruby (~> 1.0)
     i18n-coverage (0.2.0)
     i18n-tasks (0.9.34)
@@ -236,7 +236,7 @@ GEM
     public_suffix (4.0.6)
     puma (5.3.2)
       nio4r (~> 2.0)
-    racc (1.5.2)
+    racc (1.6.0)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -268,8 +268,9 @@ GEM
     rails-i18n (6.0.0)
       i18n (>= 0.7, < 2)
       railties (>= 6.0.0, < 7)
-    rails_translation_manager (0.1.0)
+    rails_translation_manager (1.1.0)
       activesupport
+      i18n-tasks
       rails-i18n
     railties (6.1.4.1)
       actionpack (= 6.1.4.1)
@@ -402,7 +403,7 @@ GEM
       thor
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.4.2)
+    zeitwerk (2.5.1)
 
 PLATFORMS
   ruby
@@ -421,7 +422,6 @@ DEPENDENCIES
   govuk_test
   htmlentities
   i18n-coverage
-  i18n-tasks
   jasmine
   jasmine_selenium_runner
   minitest-reporters