diff --git a/tools/archive.py b/tools/archive.py
new file mode 100755
index 00000000..6e87ea9f
--- /dev/null
+++ b/tools/archive.py
@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+import pathlib
+import shutil
+import sys
+
+import xml.etree.ElementTree as etree
+
+from datetime import datetime, timedelta
+
+from xeplib import load_xepinfos, Status
+
+
+def main():
+    import argparse
+
+    parser = argparse.ArgumentParser(
+        description="Show the XEPs which need to be changed to deferred."
+    )
+
+    parser.add_argument(
+        "old",
+        type=argparse.FileType("rb"),
+        help="Old XEP list"
+    )
+
+    parser.add_argument(
+        "new",
+        type=argparse.FileType("rb"),
+        help="New XEP list"
+    )
+
+    parser.add_argument(
+        "-d", "--xeps-dir",
+        type=pathlib.Path,
+        default=pathlib.Path.cwd() / "build",
+        help="Path to the built XEPs (defaults to ./build)"
+    )
+
+    parser.add_argument(
+        "-a", "--attic",
+        type=pathlib.Path,
+        default=pathlib.Path.cwd() / '../xep-attic/content/',
+        help="Path to the attic (defaults to ../xep-attic/content/)"
+    )
+
+    args = parser.parse_args()
+
+    with args.old as f:
+        old_tree = etree.parse(f)
+
+    old_accepted, _ = load_xepinfos(old_tree)
+
+    with args.new as f:
+        new_tree = etree.parse(f)
+
+    new_accepted, _ = load_xepinfos(new_tree)
+
+    changed = False
+
+    for xep, new_info in new_accepted.items():
+        old_version = old_accepted.get(xep, {}).get("last_revision", {}).get(
+            "version"
+        )
+        new_version = new_info["last_revision"]["version"]
+
+        if old_version == new_version:
+            continue
+
+        curr_file = args.xeps_dir / "xep-{:04d}.html".format(xep)
+        attic_file = args.attic / "xep-{:04d}-{}.html".format(xep, new_version)
+
+        print("XEP-{:04d}:".format(xep), old_version, "->", new_version)
+
+        shutil.copy(str(curr_file), str(attic_file))
+        changed = True
+
+    if changed:
+        print(
+            "{}: do not forget to commit & push the attic!".format(
+                sys.argv[0]
+            ),
+            file=sys.stderr
+        )
+    else:
+        print("{}: nothing to do".format(sys.argv[0]),
+              file=sys.stderr)
+
+
+if __name__ == "__main__":
+    main()