diff --git a/app/pubspec.yaml b/app/pubspec.yaml
index 0dda167..47ddf99 100644
--- a/app/pubspec.yaml
+++ b/app/pubspec.yaml
@@ -2,7 +2,7 @@ name: diet_guard_app
 description: "Companion phone app for diet_guard: log meals on the go."
 publish_to: 'none'
 
-version: 1.0.45+1
+version: 1.0.46+1
 
 environment:
   sdk: ^3.12.2
diff --git a/diet_guard/_prune_peers.py b/diet_guard/_prune_peers.py
index 59bf1f8..42c9218 100644
--- a/diet_guard/_prune_peers.py
+++ b/diet_guard/_prune_peers.py
@@ -34,6 +34,7 @@ from diet_guard._device import device_identity
 from diet_guard._sync_client import _client_for_run
 from diet_guard._sync_paths import (
     _DEVICES_DIR,
+    _REVS_DIR,
     _device_budget_path,
     _device_food_bank_path,
     _device_log_path,
@@ -69,12 +70,21 @@ class PrunePlan:
 
 
 def _device_paths(device_id: str) -> tuple[str, ...]:
-    """Return every path a device publishes under."""
+    """Return every path a device publishes under.
+
+    The revision marker is one of them, and forgetting it is not cosmetic:
+    ``_sync_refresh._candidate_peers`` enumerates peers from the revision map,
+    so a marker left behind for a deleted device makes every tick propose a
+    peer that no longer exists and pay a round trip discovering that. Pruning
+    without this made the narrow pull *slower* (~90ms -> ~15s) rather than
+    faster.
+    """
     return (
         _device_log_path(device_id),
         _device_food_bank_path(device_id),
         _device_manual_bank_path(device_id),
         _device_budget_path(device_id),
+        f"{_REVS_DIR}/{device_id}",
     )
 
 
diff --git a/diet_guard/tests/test_prune_peers.py b/diet_guard/tests/test_prune_peers.py
index 5c6e103..ced591d 100644
--- a/diet_guard/tests/test_prune_peers.py
+++ b/diet_guard/tests/test_prune_peers.py
@@ -102,7 +102,7 @@ class TestApply:
 
         written = _prune_peers.backup_peers(client, ["dead"], tmp_path)
 
-        assert written == 4  # log, food bank, curated bank, budget
+        assert written == 5  # log, food bank, curated bank, budget, rev
         assert (tmp_path / "dead" / "food_log.json").read_text() == "{}"
 
     def test_backup_skips_paths_a_device_never_published(self, tmp_path: Path) -> None:
@@ -111,11 +111,26 @@ class TestApply:
 
         assert _prune_peers.backup_peers(client, ["dead"], tmp_path) == 0
 
+    def test_apply_deletes_the_revision_marker_too(self) -> None:
+        """Leaving it behind makes the narrow pull slower, not faster.
+
+        ``_sync_refresh._candidate_peers`` enumerates peers from the revision
+        map, so an orphaned marker resurrects a deleted device as a candidate
+        and costs a round trip every tick. Observed for real: pruning without
+        this took the narrow pull from ~90ms to ~15s.
+        """
+        client = MagicMock()
+
+        list(_prune_peers.apply_prune(client, ["dead"]))
+
+        deleted = [call.args[0] for call in client.delete_file.call_args_list]
+        assert "diet-guard-sync/revs/dead" in deleted
+
     def test_apply_deletes_all_four_paths(self) -> None:
         client = MagicMock()
 
         assert list(_prune_peers.apply_prune(client, ["dead"])) == ["dead"]
-        assert client.delete_file.call_count == 4
+        assert client.delete_file.call_count == 5
 
 
 class TestCommand:
@@ -180,7 +195,7 @@ class TestCommand:
         code, out = self._run(monkeypatch, client, apply=True, backup_dir=str(tmp_path))
 
         assert code == 0
-        assert client.delete_file.call_count == 4
+        assert client.delete_file.call_count == 5
         assert any("pruned 1 device" in line for line in out)
 
     def test_main_dispatches_the_subcommand(