diff --git a/scripts/sync_release_history.py b/scripts/sync_release_history.py
index 88b345c..5072ea1 100755
--- a/scripts/sync_release_history.py
+++ b/scripts/sync_release_history.py
@@ -13,6 +13,11 @@
 HEADING_RE = re.compile(r"^(#{2,3})\s+(.+?)\s*$")
 LINK_RE = re.compile(r"\[([^\]]+)\]\((https?://[^)]+)\)")
 CODE_RE = re.compile(r"`([^`]+)`")
+RST_HEADER = [
+    ".. SPDX-FileCopyrightText: 2026 LibreCode coop and contributors",
+    ".. SPDX-License-" + "Identifier: AGPL-3.0-or-later",
+    "",
+]
 
 
 def load_json(path: Path) -> dict[str, object]:
@@ -33,7 +38,7 @@ def markdown_section_to_rst(section: str, version: str) -> str:
     if not lines:
         raise ValueError("changelog section must not be empty")
 
-    output: list[str] = []
+    output: list[str] = [*RST_HEADER, ".. This file is generated from LibreSign/libresign release history.", ""]
     first_heading_seen = False
     for raw in lines:
         match = HEADING_RE.match(raw)
@@ -85,6 +90,7 @@ def render_major_index(major: int, versions: list[str]) -> str:
     ordered = sorted(versions, key=version_key, reverse=True)
     title = f"LibreSign {major}"
     body = [
+        *RST_HEADER,
         ".. This file is generated from LibreSign release history. Do not edit release text here manually.",
         "",
         title,
@@ -101,6 +107,7 @@ def render_major_index(major: int, versions: list[str]) -> str:
 def render_root_index(majors: list[int]) -> str:
     title = "Release history"
     body = [
+        *RST_HEADER,
         ".. This file is generated. Release text is sourced from LibreSign/libresign per-major changelogs.",
         "",
         title,
diff --git a/tests/test_sync_release_history.py b/tests/test_sync_release_history.py
index 9590a0c..6a384bf 100644
--- a/tests/test_sync_release_history.py
+++ b/tests/test_sync_release_history.py
@@ -25,6 +25,7 @@ def test_markdown_release_section_becomes_browsable_rst(self) -> None:
         self.assertIn("15.1.0 - 2026-09-21", rendered)
         self.assertIn("Added\n-----", rendered)
         self.assertIn("`#10 <https://github.com/LibreSign/libresign/pull/10>`_", rendered)
+        self.assertIn("AGPL-3.0-or-later", rendered)
 
     def test_synchronization_requires_successful_matching_publication(self) -> None:
         with tempfile.TemporaryDirectory() as directory:
@@ -67,6 +68,7 @@ def test_synchronization_is_idempotent_and_indexes_major(self) -> None:
             self.assertEqual(first, second)
             self.assertIn("15.1.0", (docs / "developer_manual/release-history/15/index.rst").read_text(encoding="utf-8"))
             self.assertIn("LibreSign 15 <15/index>", (docs / "developer_manual/release-history/index.rst").read_text(encoding="utf-8"))
+            self.assertIn("AGPL-3.0-or-later", (docs / "developer_manual/release-history/15/index.rst").read_text(encoding="utf-8"))
 
     def test_versions_sort_semantically(self) -> None:
         versions = ["15.9.0", "15.10.0", "15.10.0-rc.1", "15.2.4"]