diff --git a/.github/workflows/ci-scriv-entries.yml b/.github/workflows/ci-scriv-entries.yml
new file mode 100644
index 0000000..8e30f1e
--- /dev/null
+++ b/.github/workflows/ci-scriv-entries.yml
@@ -0,0 +1,27 @@
+# This workflow verifies that the changelod.d entries have been added
+# for the changes in the pull request, using the GH CLI to check the changed files in the PR.
+
+name: CI Scriv entries.
+
+on:
+  pull_request:
+
+jobs:
+  ci-scriv-entries:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ github.head_ref }}
+
+      - uses: actions/setup-python@v6
+        with:
+          python-version: 3.13
+
+      - name: Check Scriv entries have been added.
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        run: |
+          gh pr view --json files --jq '.files[].path' \
+          | grep -q "^changelog\.d/.*\.md$" || (echo "No changelog.d entries added or changed." && exit 1)
diff --git a/.github/workflows/create-github-release.yml b/.github/workflows/create-github-release.yml
index 7812299..20856d1 100644
--- a/.github/workflows/create-github-release.yml
+++ b/.github/workflows/create-github-release.yml
@@ -1,3 +1,6 @@
+# This workflow creates a GitHub release based on the current version
+# changed in the PR created by the create-release-pr workflow.
+
 name: Create GitHub release.
 
 on:
diff --git a/.github/workflows/create-release-pr.yml b/.github/workflows/create-release-pr.yml
index 1bb42ff..ff6b8d5 100644
--- a/.github/workflows/create-release-pr.yml
+++ b/.github/workflows/create-release-pr.yml
@@ -1,3 +1,7 @@
+# This workflow creates a pull request to bump the version and update the changelog
+# according to the semantic versioning type provided as input.
+# Once the PR is merged a new GH release should be created using the create-github-release workflow.
+
 name: Create a release pull request.
 
 on:
diff --git a/changelog.d/20260116_201552_daniel.quiroga_check_scriv_entries.md b/changelog.d/20260116_201552_daniel.quiroga_check_scriv_entries.md
new file mode 100644
index 0000000..a8c5f0e
--- /dev/null
+++ b/changelog.d/20260116_201552_daniel.quiroga_check_scriv_entries.md
@@ -0,0 +1,55 @@
+<!--
+Create a new changelog entry for every change in the repository.
+
+Please adhere to the following instructions:
+* Add a new bullet item for the category that best describes the change.
+* You may optionally append "(by @<author>)" at the end of the bullet item,
+  where @<author> is the GitHub username of the author of the change. These
+  affiliations will be displayed in the release notes for every release.
+* The accepted categories are: Removed, Added, Changed, Deprecated, Fixed,
+  and Security.
+* Indicate breaking changes with a "**BREAKING CHANGE:**" prefix in the
+  bullet item.
+
+Uncomment the section that is right (remove the HTML comment wrapper).
+For top level release notes, leave all the headers commented out.
+-->
+
+<!--
+### Removed
+
+- A bullet item for the Removed category.
+
+-->
+
+### Added
+
+- A new workflow has been added to verify Scriv is used when opening PRs.
+
+<!--
+### Changed
+
+- A bullet item for the Changed category.
+
+-->
+
+<!--
+### Deprecated
+
+- A bullet item for the Deprecated category.
+
+-->
+
+<!--
+### Fixed
+
+- A bullet item for the Fixed category.
+
+-->
+
+<!--
+### Security
+
+- A bullet item for the Security category.
+
+-->