diff --git a/govuk_app_config.gemspec b/govuk_app_config.gemspec
index 4ad3396..00565dc 100644
--- a/govuk_app_config.gemspec
+++ b/govuk_app_config.gemspec
@@ -21,6 +21,9 @@ Gem::Specification.new do |spec|
   spec.require_paths = %w[lib]
 
   spec.add_dependency "logstasher", "~> 2.1"
+  spec.add_dependency "opentelemetry-exporter-otlp", "~> 0.25.0"
+  spec.add_dependency "opentelemetry-instrumentation-all", "~> 0.39.1"
+  spec.add_dependency "opentelemetry-sdk", "~> 1.2"
   spec.add_dependency "plek", ">= 4", "< 6"
   spec.add_dependency "prometheus_exporter", "~> 2.0"
   spec.add_dependency "puma", ">= 5.6", "< 7.0"