diff --git a/CHANGELOG.md b/CHANGELOG.md
index a3f467e..f6bb5aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,23 @@ Versioning here is not strict SemVer: breaking changes are documented in a
 v1.11.0, v1.10.0, v1.4.0) rather than forcing a major bump. This entry follows
 that established practice.
 
-## v1.18.1 (2026-09-03) — fix sparse Stage 1 qualification selection; serving still off
+## v1.18.2 (2026-09-02) — live-arm diagnostic evidence for rate-limit failures; serving still off
+
+The out-of-band Stage 1 comparator now records why a live observation failed,
+not just that it did. A failed live arm keeps the HTTP status and reason and an
+allow-listed subset of response headers — `Retry-After`, `RateLimit-*` and
+`X-RateLimit-*` — and every live observation records when it started and
+finished, so the realised spacing between requests can be read off the report
+rather than inferred. The first Stage 1 run stopped on an HTTP 429 and preserved
+only the error string, which left the pacing question unanswerable.
+
+Comparison semantics are unchanged: one live observation per case, the same
+budget guard, no retry, no resume, no automatic backoff. The response body is
+never read and no public response model is widened; the change is confined to
+the comparator, which stays outside the request path. Snapshot serving remains
+off.
+
+## v1.18.1 (2026-09-02) — fix sparse Stage 1 qualification selection; serving still off
 
 Fixes the out-of-band Stage 1 comparator’s selection of sparse placeholders,
 so `S4_thin` and `S11_provisional_empty` are selected from the eligible
diff --git a/pyproject.toml b/pyproject.toml
index 2200edf..7759e6e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "property-shared"
-version = "1.18.1"
+version = "1.18.2"
 description = "UK property data MCP server and API — Land Registry comparable sales, Rightmove listings, EPC certificates (England & Wales, GOV.UK Bearer API), rental analysis, and stamp duty."
 readme = "README.md"
 license = "MIT"
diff --git a/server.json b/server.json
index 398df14..b8d76ae 100644
--- a/server.json
+++ b/server.json
@@ -3,7 +3,7 @@
   "name": "io.github.paulieb89/property-shared",
   "title": "UK Property Data",
   "description": "UK property data — Land Registry comps, EPC, Rightmove, rental yields, stamp duty, Companies House",
-  "version": "1.18.1",
+  "version": "1.18.2",
   "websiteUrl": "https://bouch.dev/products/property-report",
   "repository": {
     "url": "https://github.com/paulieb89/property-shared",
@@ -16,7 +16,7 @@
     {
       "registryType": "pypi",
       "identifier": "property-shared",
-      "version": "1.18.1",
+      "version": "1.18.2",
       "runtimeHint": "uvx",
       "transport": { "type": "stdio" }
     }
diff --git a/uv.lock b/uv.lock
index 5a21aac..8d81664 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1301,7 +1301,7 @@ wheels = [
 
 [[package]]
 name = "property-shared"
-version = "1.18.1"
+version = "1.18.2"
 source = { editable = "." }
 dependencies = [
     { name = "beautifulsoup4" },