diff --git a/.github/ci/bind920_candidate.py b/.github/ci/bind920_candidate.py
index 223e4759d2..33c21e9c89 100644
--- a/.github/ci/bind920_candidate.py
+++ b/.github/ci/bind920_candidate.py
@@ -12,6 +12,7 @@
 
 
 BIND_SERIES = (9, 20)
+BIND_UPSTREAM_REPOSITORY = "https://github.com/isc-projects/bind9.git"
 DISTVERSION_PATTERN = re.compile(r"^DISTVERSION[?+]?=\s*([0-9]+\.[0-9]+\.[0-9]+)\s*$", re.MULTILINE)
 PORTREVISION_PATTERN = re.compile(r"^PORTREVISION[?+]?=\s*([0-9]+)\s*$", re.MULTILINE)
 DISTINFO_SHA256_PATTERN = re.compile(r"^SHA256\s+\(bind-([0-9]+\.[0-9]+\.[0-9]+)\.tar\.[^)]+\)\s+=\s+(\S+)\s*$", re.MULTILINE)
@@ -275,6 +276,27 @@ def render_assessment_markdown(assessment: Assessment) -> str:
     )
 
 
+def upstream_bind_release_tag(version: str) -> str:
+    distversion = version.split("_", maxsplit=1)[0]
+    _version_tuple(distversion)
+    return f"v{distversion}"
+
+
+def render_commit_log_markdown(title: str, commit_log_text: str, empty_message: str) -> str:
+    lines: list[str] = []
+    for raw_line in commit_log_text.splitlines():
+        line = raw_line.strip()
+        if not line:
+            continue
+        parts = line.split(maxsplit=1)
+        commit = parts[0]
+        subject = parts[1] if len(parts) > 1 else ""
+        lines.append(f"- `{commit}` {subject}".rstrip())
+    if not lines:
+        lines = [f"- {empty_message}"]
+    return f"### {title}\n\n" + "\n".join(lines) + "\n"
+
+
 def main() -> None:
     parser = argparse.ArgumentParser()
     subparsers = parser.add_subparsers(dest="command", required=True)
@@ -295,6 +317,13 @@ def main() -> None:
     assess_parser.add_argument("--old-makefile", type=Path)
     assess_parser.add_argument("--new-makefile", type=Path)
     assess_parser.add_argument("--output", type=Path, required=True)
+    tag_parser = subparsers.add_parser("upstream-tag")
+    tag_parser.add_argument("--version", required=True)
+    render_parser = subparsers.add_parser("render-commit-log")
+    render_parser.add_argument("--title", required=True)
+    render_parser.add_argument("--commits", type=Path, required=True)
+    render_parser.add_argument("--empty-message", required=True)
+    render_parser.add_argument("--output", type=Path, required=True)
     arguments = parser.parse_args()
     if arguments.command == "update-profile":
         update_profile(
@@ -326,6 +355,17 @@ def main() -> None:
             new_makefile_text,
         )
         arguments.output.write_text(render_assessment_markdown(assessment), encoding="utf-8")
+    elif arguments.command == "upstream-tag":
+        print(upstream_bind_release_tag(arguments.version))
+    elif arguments.command == "render-commit-log":
+        arguments.output.write_text(
+            render_commit_log_markdown(
+                arguments.title,
+                arguments.commits.read_text(encoding="utf-8"),
+                arguments.empty_message,
+            ),
+            encoding="utf-8",
+        )
 
 
 if __name__ == "__main__":
diff --git a/.github/ci/ci-tests/test_bind920_candidate.py b/.github/ci/ci-tests/test_bind920_candidate.py
index fbe60fc0ec..9a0fb19050 100644
--- a/.github/ci/ci-tests/test_bind920_candidate.py
+++ b/.github/ci/ci-tests/test_bind920_candidate.py
@@ -29,6 +29,8 @@
 candidate_is_newer = bind920_candidate.candidate_is_newer
 parse_bind920_makefile = bind920_candidate.parse_bind920_makefile
 render_updated_profile = bind920_candidate.render_updated_profile
+render_commit_log_markdown = bind920_candidate.render_commit_log_markdown
+upstream_bind_release_tag = bind920_candidate.upstream_bind_release_tag
 
 
 class Bind920CandidateTest(unittest.TestCase):
@@ -188,6 +190,41 @@ def test_assessment_summary_is_stable(self) -> None:
             result.summary,
         )
 
+    def test_upstream_bind_release_tag_strips_portrevision(self) -> None:
+        """Upstream BIND tags must be based on BIND versions, not FreeBSD package revisions."""
+        self.assertEqual("v9.20.26", upstream_bind_release_tag("9.20.26_2"))
+        self.assertEqual("v9.20.27", upstream_bind_release_tag("9.20.27"))
+
+    def test_render_commit_log_markdown_lists_commit_subjects(self) -> None:
+        """Candidate PRs should summarize upstream release commits without full commit bodies."""
+        rendered = render_commit_log_markdown(
+            "Upstream BIND Changes",
+            "abc1234 Fix resolver crash\n"
+            "def5678 Improve DNSSEC validation\n",
+            "No upstream commits were found.",
+        )
+
+        self.assertEqual(
+            "### Upstream BIND Changes\n\n"
+            "- `abc1234` Fix resolver crash\n"
+            "- `def5678` Improve DNSSEC validation\n",
+            rendered,
+        )
+
+    def test_render_commit_log_markdown_uses_fallback_when_empty(self) -> None:
+        """PR bodies should explain missing upstream history instead of showing a blank section."""
+        rendered = render_commit_log_markdown(
+            "Upstream BIND Changes",
+            "\n",
+            "Could not resolve upstream BIND release tags.",
+        )
+
+        self.assertEqual(
+            "### Upstream BIND Changes\n\n"
+            "- Could not resolve upstream BIND release tags.\n",
+            rendered,
+        )
+
     def test_render_updated_profile_preserves_key_order_and_updates_candidate_values(self) -> None:
         """Profile rewrites must be stable and limited to candidate values."""
         current = Bind920Profile("repo", "old", "oldmake", "olddist", "9.20.26", 1)
@@ -426,11 +463,20 @@ def test_candidate_workflow_never_publishes_packages(self) -> None:
     def test_candidate_workflow_includes_ports_commit_subjects_in_pr_body(self) -> None:
         """Review PRs must show the FreeBSD Ports commits behind the candidate."""
         workflow = self.workflow_text()
-        self.assertIn("### FreeBSD Ports Changes", workflow)
-        self.assertIn("while read -r commit subject; do", workflow)
-        self.assertIn("printf -- '- `%s` %s\\n' \"$commit\" \"$subject\"", workflow)
+        self.assertIn("render-commit-log", workflow)
+        self.assertIn("--title \"FreeBSD Ports Changes\"", workflow)
         self.assertIn("No dns/bind920 commits found between the pinned and candidate Ports commits.", workflow)
 
+    def test_candidate_workflow_includes_upstream_bind_commit_subjects_in_pr_body(self) -> None:
+        """Review PRs must show upstream BIND commits between the old and new release tags."""
+        workflow = self.workflow_text()
+        self.assertIn("https://github.com/isc-projects/bind9.git", workflow)
+        self.assertIn("old_distversion=", workflow)
+        self.assertIn("--title \"Upstream BIND Changes\"", workflow)
+        self.assertIn("upstream-tag", workflow)
+        self.assertIn("git -C \"$RUNNER_TEMP/bind9\" log --format='%h %s' \"$old_tag..$new_tag\"", workflow)
+        self.assertIn("Could not resolve upstream BIND release tags.", workflow)
+
     def test_candidate_workflow_uses_pinned_actions(self) -> None:
         """Workflow actions must stay pinned to immutable SHAs."""
         workflow = self.workflow_text()
diff --git a/.github/workflows/bind920-candidate.yml b/.github/workflows/bind920-candidate.yml
index c9d2e34362..819e65d2b3 100644
--- a/.github/workflows/bind920-candidate.yml
+++ b/.github/workflows/bind920-candidate.yml
@@ -97,6 +97,7 @@ jobs:
                   package_version = f"{candidate.distversion}_{candidate.portrevision}"
               print(f"newer={'true' if newer else 'false'}", file=output)
               print(f"old_version={old_package_version}", file=output)
+              print(f"old_distversion={current.distversion}", file=output)
               print(f"new_version={package_version}", file=output)
               print(f"candidate_distversion={candidate.distversion}", file=output)
               print(f"portrevision={candidate.portrevision}", file=output)
@@ -115,6 +116,7 @@ jobs:
           PORTS_DIFF: ${{ steps.ports.outputs.ports_diff }}
           PORTS_LOG: ${{ steps.ports.outputs.ports_log }}
           CURRENT_MAKEFILE: ${{ steps.ports.outputs.current_makefile }}
+          BIND_UPSTREAM_REPOSITORY: https://github.com/isc-projects/bind9.git
         run: |
           set -euo pipefail
           printf '%s\n' "$CHANGELOG_TEXT" > "$RUNNER_TEMP/maintainer-notes.txt"
@@ -139,18 +141,36 @@ jobs:
             --old-makefile "$CURRENT_MAKEFILE" \
             --new-makefile "$PORTS_DIR/dns/bind920/Makefile" \
             --output "$RUNNER_TEMP/assessment.md"
+          old_tag=$(python3 .github/ci/bind920_candidate.py upstream-tag \
+            --version '${{ steps.candidate.outputs.old_distversion }}')
+          new_tag=$(python3 .github/ci/bind920_candidate.py upstream-tag \
+            --version '${{ steps.candidate.outputs.candidate_distversion }}')
+          upstream_empty_message="No upstream BIND commits were found between $old_tag and $new_tag."
+          if git clone --filter=blob:none --no-checkout "$BIND_UPSTREAM_REPOSITORY" "$RUNNER_TEMP/bind9" \
+              && git -C "$RUNNER_TEMP/bind9" fetch --no-tags origin \
+                "refs/tags/$old_tag:refs/tags/$old_tag" \
+                "refs/tags/$new_tag:refs/tags/$new_tag"; then
+            git -C "$RUNNER_TEMP/bind9" log --format='%h %s' "$old_tag..$new_tag" > "$RUNNER_TEMP/upstream.log"
+          else
+            upstream_empty_message="Could not resolve upstream BIND release tags."
+            : > "$RUNNER_TEMP/upstream.log"
+          fi
+          python3 .github/ci/bind920_candidate.py render-commit-log \
+            --title "Upstream BIND Changes" \
+            --commits "$RUNNER_TEMP/upstream.log" \
+            --empty-message "$upstream_empty_message" \
+            --output "$RUNNER_TEMP/upstream-changes.md"
+          python3 .github/ci/bind920_candidate.py render-commit-log \
+            --title "FreeBSD Ports Changes" \
+            --commits "$PORTS_LOG" \
+            --empty-message "No dns/bind920 commits found between the pinned and candidate Ports commits." \
+            --output "$RUNNER_TEMP/ports-changes.md"
           {
             cat "$RUNNER_TEMP/assessment.md"
-            printf '\n### FreeBSD Ports Changes\n\n'
-            if [ -s "$PORTS_LOG" ]; then
-              while read -r commit subject; do
-                if [ -n "$commit" ]; then
-                  printf -- '- `%s` %s\n' "$commit" "$subject"
-                fi
-              done < "$PORTS_LOG"
-            else
-              printf -- '- No dns/bind920 commits found between the pinned and candidate Ports commits.\n'
-            fi
+            printf '\n'
+            cat "$RUNNER_TEMP/upstream-changes.md"
+            printf '\n'
+            cat "$RUNNER_TEMP/ports-changes.md"
             printf '\n### Candidate Inputs\n\n'
             printf -- '- FreeBSD Ports commit: `%s`\n' "$CANDIDATE_COMMIT"
             printf -- '- Previous FreeBSD Ports commit: `%s`\n' '${{ steps.ports.outputs.current_commit }}'