diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 308c348..a250eb9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,6 +5,10 @@ on:
   push:
     branches: main
   pull_request:
+    # The specific activity types are listed here to include "labeled" and "unlabeled"
+    # (which are not included by default for the "pull_request" trigger).
+    # This is needed to allow skipping enforcement of the changelog in PRs with specific labels,
+    # as defined in the (optional) "skipLabels" property.
     types: [opened, synchronize, reopened, ready_for_review, labeled, unlabeled]
 
 jobs: