diff --git a/Gemfile.lock b/Gemfile.lock
index 10d8c7b44..446a0f54d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -169,6 +169,12 @@ GEM
       warden-oauth2 (~> 0.0.1)
     globalid (1.1.0)
       activesupport (>= 5.0)
+    google-protobuf (3.23.4)
+    google-protobuf (3.23.4-aarch64-linux)
+    google-protobuf (3.23.4-arm64-darwin)
+    google-protobuf (3.23.4-x86_64-linux)
+    googleapis-common-protos-types (1.7.0)
+      google-protobuf (~> 3.14)
     govspeak (8.0.1)
       actionview (>= 6)
       addressable (>= 2.3.8, < 3)
@@ -184,8 +190,11 @@ GEM
       jquery-rails (~> 4.3)
       plek (>= 2.1)
       rails (>= 6)
-    govuk_app_config (8.0.2)
+    govuk_app_config (9.0.4)
       logstasher (~> 2.1)
+      opentelemetry-exporter-otlp (~> 0.25.0)
+      opentelemetry-instrumentation-all (~> 0.39.1)
+      opentelemetry-sdk (~> 1.2)
       plek (>= 4, < 6)
       prometheus_exporter (~> 2.0)
       puma (>= 5.6, < 7.0)
@@ -353,6 +362,196 @@ GEM
     omniauth-oauth2 (1.8.0)
       oauth2 (>= 1.4, < 3)
       omniauth (~> 2.0)
+    opentelemetry-api (1.1.0)
+    opentelemetry-common (0.19.7)
+      opentelemetry-api (~> 1.0)
+    opentelemetry-exporter-otlp (0.25.0)
+      google-protobuf (~> 3.19)
+      googleapis-common-protos-types (~> 1.3)
+      opentelemetry-api (~> 1.1)
+      opentelemetry-common (~> 0.19.6)
+      opentelemetry-sdk (~> 1.2)
+      opentelemetry-semantic_conventions
+    opentelemetry-instrumentation-action_pack (0.7.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+      opentelemetry-instrumentation-rack (~> 0.21)
+    opentelemetry-instrumentation-action_view (0.6.0)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-active_support (~> 0.1)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-active_job (0.5.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-active_model_serializers (0.20.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-active_record (0.6.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+      ruby2_keywords
+    opentelemetry-instrumentation-active_support (0.4.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-all (0.39.1)
+      opentelemetry-instrumentation-active_model_serializers (~> 0.20.1)
+      opentelemetry-instrumentation-aws_sdk (~> 0.4.1)
+      opentelemetry-instrumentation-bunny (~> 0.20.1)
+      opentelemetry-instrumentation-concurrent_ruby (~> 0.21.1)
+      opentelemetry-instrumentation-dalli (~> 0.24.1)
+      opentelemetry-instrumentation-delayed_job (~> 0.20.1)
+      opentelemetry-instrumentation-ethon (~> 0.21.1)
+      opentelemetry-instrumentation-excon (~> 0.21.1)
+      opentelemetry-instrumentation-faraday (~> 0.23.1)
+      opentelemetry-instrumentation-grape (~> 0.1.3)
+      opentelemetry-instrumentation-graphql (~> 0.26.2)
+      opentelemetry-instrumentation-http (~> 0.23.1)
+      opentelemetry-instrumentation-http_client (~> 0.22.1)
+      opentelemetry-instrumentation-koala (~> 0.20.1)
+      opentelemetry-instrumentation-lmdb (~> 0.22.1)
+      opentelemetry-instrumentation-mongo (~> 0.22.1)
+      opentelemetry-instrumentation-mysql2 (~> 0.24.2)
+      opentelemetry-instrumentation-net_http (~> 0.22.1)
+      opentelemetry-instrumentation-pg (~> 0.25.2)
+      opentelemetry-instrumentation-que (~> 0.6.1)
+      opentelemetry-instrumentation-racecar (~> 0.2.1)
+      opentelemetry-instrumentation-rack (~> 0.23.1)
+      opentelemetry-instrumentation-rails (~> 0.27.1)
+      opentelemetry-instrumentation-rake (~> 0.2.1)
+      opentelemetry-instrumentation-rdkafka (~> 0.3.1)
+      opentelemetry-instrumentation-redis (~> 0.25.1)
+      opentelemetry-instrumentation-resque (~> 0.4.1)
+      opentelemetry-instrumentation-restclient (~> 0.22.1)
+      opentelemetry-instrumentation-ruby_kafka (~> 0.20.1)
+      opentelemetry-instrumentation-sidekiq (~> 0.24.1)
+      opentelemetry-instrumentation-sinatra (~> 0.23.1)
+      opentelemetry-instrumentation-trilogy (~> 0.56.1)
+    opentelemetry-instrumentation-aws_sdk (0.4.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-base (0.22.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-registry (~> 0.1)
+    opentelemetry-instrumentation-bunny (0.20.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-concurrent_ruby (0.21.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-dalli (0.24.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-delayed_job (0.20.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-ethon (0.21.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-excon (0.21.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-faraday (0.23.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-grape (0.1.3)
+      opentelemetry-api (~> 1.1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+      opentelemetry-instrumentation-rack (~> 0.21)
+    opentelemetry-instrumentation-graphql (0.26.2)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-http (0.23.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-http_client (0.22.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-koala (0.20.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-lmdb (0.22.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-mongo (0.22.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-mysql2 (0.24.2)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-net_http (0.22.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-pg (0.25.2)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-que (0.6.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-racecar (0.2.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-rack (0.23.2)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-rails (0.27.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-action_pack (~> 0.7.0)
+      opentelemetry-instrumentation-action_view (~> 0.6.0)
+      opentelemetry-instrumentation-active_job (~> 0.5.1)
+      opentelemetry-instrumentation-active_record (~> 0.6.1)
+      opentelemetry-instrumentation-active_support (~> 0.4.1)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-rake (0.2.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-rdkafka (0.3.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-redis (0.25.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-resque (0.4.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-restclient (0.22.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-ruby_kafka (0.20.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-sidekiq (0.24.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+    opentelemetry-instrumentation-sinatra (0.23.1)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+      opentelemetry-instrumentation-rack (~> 0.21)
+    opentelemetry-instrumentation-trilogy (0.56.2)
+      opentelemetry-api (~> 1.0)
+      opentelemetry-instrumentation-base (~> 0.22.1)
+      opentelemetry-semantic_conventions (>= 1.8.0)
+    opentelemetry-registry (0.3.0)
+      opentelemetry-api (~> 1.1)
+    opentelemetry-sdk (1.2.1)
+      opentelemetry-api (~> 1.1)
+      opentelemetry-common (~> 0.19.3)
+      opentelemetry-registry (~> 0.2)
+      opentelemetry-semantic_conventions
+    opentelemetry-semantic_conventions (1.10.0)
+      opentelemetry-api (~> 1.0)
     parallel (1.23.0)
     parser (3.2.2.3)
       ast (~> 2.4.1)