diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f8482f..38c22b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,22 @@ All notable changes to sqlite-rs. Format follows [Keep a Changelog](https://keep
 
 ## [Unreleased]
 
+## [0.18.5] - 2026-08-27
+
+### Chore
+
+- Raised line coverage to 85%+ across 21 of the 22 files that were below
+  the repo's threshold (#603): test-only coverage added for error
+  `Display`/`From`-conversion paths, subquery flatten/pushdown
+  expression-rewrite branches, join ordering, integrity-check branches,
+  parser error paths, pager checkpoint, VFS edge cases, and readline
+  dispatch/redraw/terminal logic. TOTAL line coverage 89.22% → 92.88%.
+  `src/bin/sqlite-rs/readline/term.rs` stays below threshold (66%,
+  up from 16.67%) — its tty-only branches (`RawMode::enable`'s success
+  path, `Drop`, `read_byte`) require a real controlling tty that
+  `cargo test` never has, and are flagged rather than faked with a
+  fragile pty harness.
+
 ### Performance
 
 - Tier 2 query-pipeline performance (#590), no pipeline-structure or
diff --git a/Cargo.lock b/Cargo.lock
index 5e82656..d6734a5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -781,7 +781,7 @@ checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
 
 [[package]]
 name = "sqlite-rs"
-version = "0.18.4"
+version = "0.18.5"
 dependencies = [
  "criterion",
  "md-5",
diff --git a/Cargo.toml b/Cargo.toml
index 082fb45..453c131 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sqlite-rs"
-version = "0.18.4"
+version = "0.18.5"
 edition = "2021"
 publish = false
 license = "Apache-2.0"
diff --git a/README.md b/README.md
index 06db05e..223ee7c 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ See [.openspec/plan.md](.openspec/plan.md) for the full breakdown and [.openspec
 
 ## Status
 
-**Version 0.18.4** — see [CHANGELOG.md](CHANGELOG.md). One minor version per completed plan phase.
+**Version 0.18.5** — see [CHANGELOG.md](CHANGELOG.md). One minor version per completed plan phase.
 
 | Phase | Version | Status |
 |-------|---------|--------|
@@ -85,7 +85,7 @@ See [.openspec/plan.md](.openspec/plan.md) for the full breakdown and [.openspec
 | V4 — JOINs & aggregates | 0.13.0 | ✅ Complete |
 | V5 — Transactions | 0.14.0–0.15.0 | ✅ Complete |
 | V6 — WAL & CTEs | 0.16.0–0.17.0 | ✅ Complete |
-| V7 — Polish & compatibility | 0.18.x | 🔄 In progress |
+| V7 — Polish & compatibility | 0.18.x | ✅ Complete |
 
 ### Performance