diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml
index 52a0555..59def62 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -56,7 +56,7 @@ body:
     attributes:
       label: How is the card installed?
       options:
-        - HACS
+        - Home Assistant Marketplace (or HACS)
         - Manually, as a Lovelace resource
         - Not sure
     validations:
diff --git a/.github/workflows/release-announcement.yml b/.github/workflows/release-announcement.yml
index 158616c..cf538af 100644
--- a/.github/workflows/release-announcement.yml
+++ b/.github/workflows/release-announcement.yml
@@ -65,8 +65,8 @@ jobs:
               `### Upgrading`,
               ``,
               isPrerelease
-                ? `This is a pre-release — it may contain bugs. To test it early, open Chartdeck in HACS, choose ⋮ → **Redownload**, turn on **Show beta versions** and pick this version — or install it manually.`
-                : `Update via **HACS**, or download \`chartdeck-card.js\` from the [latest release](${url}) and copy it to \`/config/www/\`.`,
+                ? `This is a pre-release — it may contain bugs. To test it early, go to **Settings → Devices & services → Marketplace**, open Chartdeck, enable its **Pre-release** entity and turn the switch on (on HACS, before Home Assistant 2026.11: ⋮ → **Redownload**, **Show beta versions**) — or install it manually.`
+                : `Update from the **Marketplace** (HACS before Home Assistant 2026.11), or download \`chartdeck-card.js\` from the [latest release](${url}) and copy it to \`/config/www/\`.`,
               ``,
               `After updating, **hard-refresh your browser** (Ctrl/Cmd+Shift+R) so the new card module loads instead of a cached one.`,
               ``,
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 461ca2d..84da3a9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -12,9 +12,9 @@ npm start         # rebuild on change, served on port 5000 for a local Home Assi
 ```
 
 `npm run build` runs the linter first and stops if it fails, so a green build means lint and
-bundle both passed. `dist/chartdeck-card.js` is committed on purpose — HACS installs it
-straight from the repository — so a change to `src/` needs the bundle rebuilt in the same
-commit. CI fails if it was not.
+bundle both passed. `dist/chartdeck-card.js` is committed on purpose — the Marketplace
+(HACS) installs it straight from the repository — so a change to `src/` needs the bundle
+rebuilt in the same commit. CI fails if it was not.
 
 ## Commit messages matter
 
diff --git a/README.md b/README.md
index 46a5574..49d1b15 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 
 <p align="center">
   <a href="https://github.com/tempus2016/chartdeck/releases"><img src="https://img.shields.io/github/v/release/tempus2016/chartdeck?include_prereleases" alt="Latest Release"></a>
-  <a href="https://github.com/hacs/integration"><img src="https://img.shields.io/badge/HACS-Default-41BDF5.svg" alt="HACS Default"></a>
+  <a href="https://my.home-assistant.io/redirect/marketplace_repository/?owner=tempus2016&repository=chartdeck"><img src="https://img.shields.io/badge/Marketplace-Default-41BDF5.svg" alt="Home Assistant Marketplace"></a>
   <a href="https://github.com/tempus2016/chartdeck/blob/main/LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue" alt="License"></a>
   <img src="https://img.shields.io/badge/Home%20Assistant-2025.1+-blue" alt="HA Version">
   <a href="https://github.com/tempus2016/chartdeck/releases"><img src="https://img.shields.io/github/downloads/tempus2016/chartdeck/total" alt="Downloads"></a>
@@ -17,7 +17,7 @@
 
 <p align="center">
   <a href="https://github.com/tempus2016/chartdeck/actions/workflows/build.yml"><img src="https://github.com/tempus2016/chartdeck/actions/workflows/build.yml/badge.svg" alt="CI"></a>
-  <a href="https://github.com/tempus2016/chartdeck/actions/workflows/hacs.yml"><img src="https://github.com/tempus2016/chartdeck/actions/workflows/hacs.yml/badge.svg" alt="HACS Validation"></a>
+  <a href="https://github.com/tempus2016/chartdeck/actions/workflows/hacs.yml"><img src="https://github.com/tempus2016/chartdeck/actions/workflows/hacs.yml/badge.svg" alt="Marketplace validation"></a>
   <a href="https://github.com/tempus2016/chartdeck/actions/workflows/codeql.yml"><img src="https://github.com/tempus2016/chartdeck/actions/workflows/codeql.yml/badge.svg" alt="CodeQL"></a>
   <a href="https://github.com/tempus2016/chartdeck/commits/main"><img src="https://img.shields.io/github/commit-activity/y/tempus2016/chartdeck" alt="Commit activity"></a>
 </p>
@@ -89,12 +89,15 @@ This page is the summary. What changed in each version is on the [releases page]
 
 ## Installation
 
-Chartdeck is in the HACS default store:
+Chartdeck is in the Home Assistant Marketplace:
 
-1. Open HACS and search for *Chartdeck*.
-2. Download it, then reload your browser.
+1. Go to **Settings → Marketplace** and search for *Chartdeck*.
+2. Choose **Install**, then reload your browser.
 
-[![Open your Home Assistant instance and open a repository inside the Home Assistant Community Store.](https://my.home-assistant.io/badges/hacs_repository.svg)](https://my.home-assistant.io/redirect/hacs_repository/?owner=tempus2016&repository=chartdeck&category=lovelace)
+[![Open your Home Assistant instance and show Chartdeck in the Marketplace.](https://my.home-assistant.io/badges/marketplace_repository.svg)](https://my.home-assistant.io/redirect/marketplace_repository/?owner=tempus2016&repository=chartdeck)
+
+On Home Assistant older than 2026.11, the Marketplace is still HACS: open HACS, search for
+*Chartdeck* and choose **Download**.
 
 To install by hand, save [chartdeck-card.js][latest-release] to `<config>/www/` and add
 `/local/chartdeck-card.js` as a dashboard resource of type `module`. The
diff --git a/test/box-plot.test.ts b/test/box-plot.test.ts
index 753952d..cdfcf53 100644
--- a/test/box-plot.test.ts
+++ b/test/box-plot.test.ts
@@ -127,6 +127,11 @@ describe('box maths', () => {
 
 type Card = HTMLElement & { setConfig(c: CardConfig): void; hass?: HomeAssistant; updateComplete: Promise<boolean> };
 
+// The fixture is relative to now and the tooltip test groups by day, so a real clock moves
+// midnight through the readings: early or late in the day the first box holds the 40 spike as
+// an outlier. Pin the clock to mid-afternoon local time; only Date is faked, timers stay real.
+vi.useFakeTimers({ toFake: ['Date'] });
+vi.setSystemTime(new Date(2026, 10, 7, 15, 0, 0));
 const now = Date.now();
 const H = 3_600_000;
 const sec = (msAgo: number) => (now - msAgo) / 1000;