diff --git a/processor/baggage/lib/opentelemetry/processor/baggage/baggage_span_processor.rb b/processor/baggage/lib/opentelemetry/processor/baggage/baggage_span_processor.rb
index 668596979..c5e840cec 100644
--- a/processor/baggage/lib/opentelemetry/processor/baggage/baggage_span_processor.rb
+++ b/processor/baggage/lib/opentelemetry/processor/baggage/baggage_span_processor.rb
@@ -5,6 +5,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 require 'opentelemetry-api'
+require 'opentelemetry-sdk'
 
 module OpenTelemetry
   module Processor
@@ -40,7 +41,7 @@ module Baggage
       #       )
       #     )
       #   end
-      class BaggageSpanProcessor
+      class BaggageSpanProcessor < OpenTelemetry::SDK::Trace::SpanProcessor
         # Called when a `Span` is started, adds Baggage keys/values to the span as attributes.
         #
         # @param [Span] span the `Span` that just started, expected to conform
diff --git a/processor/baggage/opentelemetry-processor-baggage.gemspec b/processor/baggage/opentelemetry-processor-baggage.gemspec
index ac61aeb60..adaaf13be 100644
--- a/processor/baggage/opentelemetry-processor-baggage.gemspec
+++ b/processor/baggage/opentelemetry-processor-baggage.gemspec
@@ -24,6 +24,7 @@ Gem::Specification.new do |spec|
   spec.required_ruby_version = '>= 3.0'
 
   spec.add_dependency 'opentelemetry-api', '~> 1.0'
+  spec.add_dependency 'opentelemetry-sdk', '~> 1.0'
 
   spec.add_development_dependency 'bundler', '~> 2.4'
   spec.add_development_dependency 'minitest', '~> 5.0'