diff --git a/CHANGELOG.md b/CHANGELOG.md
index 996fede..50c5ff9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,20 @@ reference are all pre-1.0, minor (0.x) releases may include breaking changes.
 
 ## [Unreleased]
 
+## [0.5.3] - 2026-07-22
+
+### Fixed
+
+- `METER_VALUE_ANOMALY` no longer false-positives on charge points that report
+  more than one measurand per sample, or on multi-connector stations. Meter
+  readings are now bucketed by (connectorId, measurand, phase, unit, location),
+  and the monotonic and non-negative checks apply only to cumulative
+  `Energy.*.Register` measurands (OCPP 1.6 section 7.28). Reported by shiv3.
+- `STATUS_TRANSITION_VIOLATION` no longer false-positives on multi-connector
+  stations. Connector status is tracked per connector (connectorId 0, the whole
+  charge point, is its own series), so a notification from one connector is not
+  compared against another's.
+
 ## [0.5.2] — 2026-07-13
 
 ### Added
diff --git a/CURRENT_STATE.md b/CURRENT_STATE.md
index e515ed0..c6ea678 100644
--- a/CURRENT_STATE.md
+++ b/CURRENT_STATE.md
@@ -4,16 +4,13 @@
 
 ## Current version
 
-`0.5.2` — one-line macOS installer (`curl … | bash`) + published `SHA256SUMS`.
-Earlier: `0.5.1` (macOS app-bundle naming), `0.5.0` (first public release).
-
-**Pending (unreleased):** detection correctness fix in `src/ocpp/detection.zig`,
-mirroring the toolkit fixes shiv3 found (toolkit#127/#128, published as 0.4.1 and
-0.4.2). `METER_VALUE_ANOMALY` now buckets readings by (connectorId, measurand,
-phase, unit, location) and checks only cumulative `Energy.*.Register`;
-`STATUS_TRANSITION_VIOLATION` tracks previous status per connectorId. The 15
-conformance goldens are unchanged (the fixtures are single-connector), so the
-contract still holds; two regression tests added.
+`0.5.3` - detection correctness fix: `METER_VALUE_ANOMALY` and
+`STATUS_TRANSITION_VIOLATION` are now per-connector / per-measurand (parity with
+the toolkit fixes shiv3 found, toolkit#127/#128, published as toolkit 0.4.1 and
+0.4.2). The 15 conformance goldens are unchanged (single-connector fixtures), so
+the contract still holds; two regression tests added.
+Earlier: `0.5.2` (one-line macOS installer), `0.5.1` (macOS app-bundle naming),
+`0.5.0` (first public release).
 
 ## Active milestone
 
diff --git a/app.zon b/app.zon
index 5984696..6d6ac75 100644
--- a/app.zon
+++ b/app.zon
@@ -3,7 +3,7 @@
     .name = "studio",
     .display_name = "OCPP DebugKit Studio",
     .description = "Native desktop debugger for OCPP charging sessions.",
-    .version = "0.5.2",
+    .version = "0.5.3",
     .icons = .{"assets/icon.png"},
     .platforms = .{"macos"},
     .permissions = .{ "view", "command", "notifications" },