diff --git a/spec/acceptance/otelcol_contrib_spec.rb b/spec/acceptance/otelcol_contrib_spec.rb
index 57a86e9..ae0f334 100644
--- a/spec/acceptance/otelcol_contrib_spec.rb
+++ b/spec/acceptance/otelcol_contrib_spec.rb
@@ -8,5 +8,8 @@
       it { is_expected.to be_enabled }
       it { is_expected.to be_running }
     end
+    describe port(8889) do
+      it { should be_listening }
+    end
   end
 end
diff --git a/spec/acceptance/otelcol_spec.rb b/spec/acceptance/otelcol_spec.rb
index cca804b..8492b82 100644
--- a/spec/acceptance/otelcol_spec.rb
+++ b/spec/acceptance/otelcol_spec.rb
@@ -8,5 +8,8 @@
       it { is_expected.to be_enabled }
       it { is_expected.to be_running }
     end
+    describe port(8888) do
+      it { should be_listening }
+    end
   end
 end