diff --git a/docs/source/business_ch21_scenario_planning_sensitivity_stress.rst b/docs/source/business_ch21_scenario_planning_sensitivity_stress.rst
index d60344a..53673ac 100644
--- a/docs/source/business_ch21_scenario_planning_sensitivity_stress.rst
+++ b/docs/source/business_ch21_scenario_planning_sensitivity_stress.rst
@@ -4,6 +4,9 @@ Business Statistics & Forecasting for Accountants (Track D)
 Chapter 21 — Scenario planning, sensitivity analysis, and stress testing
 ------------------------------------------------------------------------
 
+.. |trackd_run| replace:: d21
+.. include:: _includes/track_d_run_strip.rst
+
 This chapter turns your integrated forecast into a **decision tool**:
 
 * **Scenarios**: best/base/worst forecasts tied to explicit driver assumptions.
diff --git a/docs/source/business_ch22_financial_statement_analysis_toolkit.rst b/docs/source/business_ch22_financial_statement_analysis_toolkit.rst
index 43333bd..891c324 100644
--- a/docs/source/business_ch22_financial_statement_analysis_toolkit.rst
+++ b/docs/source/business_ch22_financial_statement_analysis_toolkit.rst
@@ -4,6 +4,9 @@ Business Statistics & Forecasting for Accountants (Track D)
 Chapter 22 — Financial statement analysis toolkit (ratios, trends, variance, common-size)
 -----------------------------------------------------------------------------------------
 
+.. |trackd_run| replace:: d22
+.. include:: _includes/track_d_run_strip.rst
+
 This chapter is the "accountant's explainer pack": a small set of repeatable analyses that
 turn monthly statements into decision support:
 
diff --git a/docs/source/business_ch23_communicating_results_governance.rst b/docs/source/business_ch23_communicating_results_governance.rst
index 4c90e66..b6eae6d 100644
--- a/docs/source/business_ch23_communicating_results_governance.rst
+++ b/docs/source/business_ch23_communicating_results_governance.rst
@@ -1,6 +1,9 @@
 Chapter 23 — Communicating results: decision memos, dashboards, and governance
 ==============================================================================
 
+.. |trackd_run| replace:: d23
+.. include:: _includes/track_d_run_strip.rst
+
 This chapter is the "final mile": turning analysis and forecasts into
 **decision-ready communication** with an audit trail.
 
diff --git a/tests/test_workbook_track_d_runstrip_ch21_23.py b/tests/test_workbook_track_d_runstrip_ch21_23.py
new file mode 100644
index 0000000..db889f9
--- /dev/null
+++ b/tests/test_workbook_track_d_runstrip_ch21_23.py
@@ -0,0 +1,29 @@
+"""Guardrails for Track D PyPI run strip.
+
+These Track D chapters are included in the full docs build and should always
+include the standard Track D "run strip" so learners can reproduce outputs
+from the PyPI-installed workbook.
+"""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+SOURCES = {
+    "docs/source/business_ch21_scenario_planning_sensitivity_stress.rst": "d21",
+    "docs/source/business_ch22_financial_statement_analysis_toolkit.rst": "d22",
+    "docs/source/business_ch23_communicating_results_governance.rst": "d23",
+}
+
+
+@pytest.mark.parametrize("rel_path, run_id", SOURCES.items())
+def test_track_d_run_strip_present(rel_path: str, run_id: str) -> None:
+    text = (ROOT / rel_path).read_text(encoding="utf-8")
+    assert f".. |trackd_run| replace:: {run_id}" in text
+    assert ".. include:: _includes/track_d_run_strip.rst" in text