diff --git a/instrumentation/racecar/opentelemetry-instrumentation-racecar.gemspec b/instrumentation/racecar/opentelemetry-instrumentation-racecar.gemspec
index 185a7a5870..2f9b051457 100644
--- a/instrumentation/racecar/opentelemetry-instrumentation-racecar.gemspec
+++ b/instrumentation/racecar/opentelemetry-instrumentation-racecar.gemspec
@@ -25,6 +25,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
   spec.required_ruby_version = ">= #{File.read(File.expand_path('../../gemspecs/RUBY_REQUIREMENT', __dir__))}"
 
+  spec.add_dependency 'activesupport'
   spec.add_dependency 'opentelemetry-api', '~> 1.0'
   spec.add_dependency 'opentelemetry-instrumentation-base', '~> 0.23.0'