diff --git a/Gemfile.lock b/Gemfile.lock
index 5e1fe778d..39b8e7ebc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,7 +102,7 @@ GEM
     chunky_png (1.3.12)
     cliver (0.3.2)
     coderay (1.1.3)
-    concurrent-ruby (1.1.8)
+    concurrent-ruby (1.2.0)
     connection_pool (2.2.3)
     crack (0.4.4)
     crass (1.0.6)
@@ -151,11 +151,16 @@ GEM
       jquery-rails (~> 4.3.1)
       plek (>= 2.1.0)
       rails (>= 3.2.0)
-    govuk_app_config (2.10.0)
-      logstasher (>= 1.2.2, < 2.2.0)
-      sentry-raven (~> 3.1.1)
-      statsd-ruby (~> 1.5.0)
-      unicorn (>= 5.4, < 5.9)
+    govuk_app_config (5.1.0)
+      logstasher (~> 2.1)
+      plek (>= 4, < 6)
+      prometheus_exporter (~> 2.0)
+      puma (>= 5.6, < 7.0)
+      rack-proxy (~> 0.7)
+      sentry-rails (~> 5.3)
+      sentry-ruby (~> 5.3)
+      statsd-ruby (~> 1.5)
+      unicorn (~> 6.1)
     govuk_publishing_components (24.7.1)
       govuk_app_config
       kramdown
@@ -170,7 +175,7 @@ GEM
       sidekiq (>= 5, < 6)
       sidekiq-logging-json (~> 0.0)
       sidekiq-statsd (>= 2.1)
-    govuk_test (2.0.0)
+    govuk_test (2.2.0)
       brakeman (~> 4.6)
       capybara
       puma
@@ -180,7 +185,7 @@ GEM
     http-accept (1.7.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    i18n (1.8.9)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     jasmine (3.7.0)
       jasmine-core (~> 3.7.0)
@@ -209,7 +214,7 @@ GEM
       activerecord
       kaminari-core (= 1.2.1)
     kaminari-core (1.2.1)
-    kgio (2.11.3)
+    kgio (2.11.4)
     kramdown (2.3.1)
       rexml
     lhm (2.2.0)
@@ -240,7 +245,7 @@ GEM
     minitest (5.14.4)
     mocha (1.11.2)
     msgpack (1.3.3)
-    multipart-post (2.1.1)
+    multipart-post (2.3.0)
     mysql2 (0.5.3)
     netrc (0.11.0)
     nio4r (2.5.7)
@@ -260,6 +265,8 @@ GEM
       capybara (>= 2.1, < 4)
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
+    prometheus_exporter (2.0.8)
+      webrick
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -267,14 +274,16 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.13.0)
     public_suffix (4.0.6)
-    puma (5.0.2)
+    puma (6.1.0)
       nio4r (~> 2.0)
     pundit (2.1.0)
       activesupport (>= 3.0.0)
     racc (1.5.2)
-    rack (2.0.9)
+    rack (2.0.9.2)
     rack-protection (2.1.0)
       rack
+    rack-proxy (0.7.6)
+      rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (6.0.3.6)
@@ -308,7 +317,7 @@ GEM
       rake (>= 0.8.7)
       thor (>= 0.20.3, < 2.0)
     rainbow (3.0.0)
-    raindrops (0.19.1)
+    raindrops (0.20.0)
     rake (13.0.1)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
@@ -317,7 +326,7 @@ GEM
     redis-namespace (1.8.0)
       redis (>= 3.0.4)
     regexp_parser (1.8.2)
-    request_store (1.5.0)
+    request_store (1.5.1)
       rack (>= 1.4)
     responders (3.0.1)
       actionpack (>= 5.0)
@@ -372,8 +381,11 @@ GEM
     selenium-webdriver (3.142.7)
       childprocess (>= 0.5, < 4.0)
       rubyzip (>= 1.2.2)
-    sentry-raven (3.1.1)
-      faraday (>= 1.0)
+    sentry-rails (5.8.0)
+      railties (>= 5.0)
+      sentry-ruby (~> 5.8.0)
+    sentry-ruby (5.8.0)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
     shoulda-context (2.0.0)
     sidekiq (5.2.8)
       connection_pool (~> 2.2, >= 2.2.2)
@@ -402,7 +414,7 @@ GEM
     thread_safe (0.3.6)
     tilt (2.0.10)
     timecop (0.9.1)
-    tzinfo (1.2.9)
+    tzinfo (1.2.11)
       thread_safe (~> 0.1)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
@@ -410,7 +422,7 @@ GEM
       unf_ext
     unf_ext (0.0.7.7)
     unicode-display_width (1.7.0)
-    unicorn (5.8.0)
+    unicorn (6.1.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
     uuid (2.3.9)
@@ -425,6 +437,7 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
+    webrick (1.8.1)
     websocket-driver (0.7.3)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
@@ -432,7 +445,7 @@ GEM
       chronic (>= 0.6.3)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.4.2)
+    zeitwerk (2.6.7)
     zeroclipboard-rails (0.1.2)
       railties (>= 3.1)
     zxcvbn-ruby (1.1.0)