diff --git a/packages/pluggableWidgets/gallery-web/CHANGELOG.md b/packages/pluggableWidgets/gallery-web/CHANGELOG.md
index 8b781149aa..d26438f059 100644
--- a/packages/pluggableWidgets/gallery-web/CHANGELOG.md
+++ b/packages/pluggableWidgets/gallery-web/CHANGELOG.md
@@ -10,6 +10,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - We fixed an issue where clicking a label inside the item content, such as the label of a checkbox, triggered the double click action with a single click.
 
+- We fixed an issue where the "Refresh time (in seconds)" property had no effect and the gallery did not reload its data periodically.
+
 ## [3.11.7] - 2026-10-02
 
 ### Fixed
diff --git a/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/.openspec.yaml b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/.openspec.yaml
new file mode 100644
index 0000000000..dc36fb1bf8
--- /dev/null
+++ b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/.openspec.yaml
@@ -0,0 +1,2 @@
+schema: spec-driven
+created: 2026-10-21
diff --git a/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/design.md b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/design.md
new file mode 100644
index 0000000000..e5b2ff3f2a
--- /dev/null
+++ b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/design.md
@@ -0,0 +1,23 @@
+## Context
+
+`DatasourceService` (`@mendix/widget-plugin-grid/src/core/Datasource.service.ts`) already contains the refresh timer. It takes `refreshIntervalMs` as an optional third constructor argument and schedules `backgroundRefresh()` when the value is above 0. Gallery injects it with `injected(DatasourceService, CORE.setupService, GY.queryGate, GY.refreshInterval.optional)`. Because `GY.refreshInterval` is never bound, brandi resolves the optional token to `undefined`, the constructor default of `0` applies, and the timer is never scheduled.
+
+Datagrid wires the same service correctly: `datagridConfig` sets `refreshIntervalMs: props.refreshInterval * 1000`, and its main binding group runs `container.bind(DG.refreshInterval).toConstant(config.refreshIntervalMs)`.
+
+## Goals / Non-Goals
+
+**Goals:** restore the pre-migration behaviour with the smallest change, mirroring Datagrid.
+
+**Non-Goals:**
+
+- Changing `DatasourceService`.
+- Changing the `showSilentRefresh` threshold (`props.refreshInterval > 1`, which was `>= 1` before the migration). That is a separate, cosmetic difference and is left as is.
+
+## Decisions
+
+- **Derive in config, bind in `_02_queryBindings.init`.** The ms value lives in `GalleryConfig`, the single source for derived settings, and the token is bound next to `GY.queryGate`, where `DatasourceService` gets its other dependencies. _Alternative:_ bind directly from `props` in `init`. Rejected because it would bypass `GalleryConfig`, which already declares `refreshIntervalMs`.
+- **Container-level tests with fake timers.** These run `CORE.setupService.setup()` and advance timers, so they prove the full path from props through config, token and service to `datasource.reload()`. A config-only assertion would not have caught the missing binding.
+
+## Risks / Trade-offs
+
+- [Apps that set a refresh time while it was broken now start reloading] → This is the documented, intended behaviour, and it is called out in the changelog.
diff --git a/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/proposal.md b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/proposal.md
new file mode 100644
index 0000000000..db724952f9
--- /dev/null
+++ b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/proposal.md
@@ -0,0 +1,26 @@
+## Why
+
+Gallery's "Refresh time (in seconds)" property has no effect (WC-3630). When the widget moved to a DI container (`b5010ee79`, "feat: move to brandi", Jan 2026), `galleryConfig` was given a placeholder `refreshIntervalMs: 0`, and the `GY.refreshInterval` token injected into `DatasourceService` was never bound. Before the migration, `GalleryStore` passed `refreshInterval * 1000` to `DatasourceService`, so this is a regression. Apps that rely on Gallery refreshing periodically now show stale data.
+
+## What Changes
+
+- `galleryConfig` derives `refreshIntervalMs` from `props.refreshInterval * 1000`.
+- The query binding group binds `GY.refreshInterval` to `config.refreshIntervalMs`, which is how Datagrid binds `DG.refreshInterval`.
+- Regression tests at container level: the value reaches the config and token, the datasource reloads after the interval, and nothing reloads when the interval is 0.
+- A CHANGELOG "Fixed" entry.
+
+## Capabilities
+
+### New Capabilities
+
+- `refresh-interval`: Gallery periodically reloads its datasource according to the "Refresh time (in seconds)" property.
+
+### Modified Capabilities
+
+<!-- None: gallery-web has no existing spec for refresh behaviour. -->
+
+## Impact
+
+- `src/model/configs/Gallery.config.ts`, `src/model/containers/Gallery.container.ts`, `src/model/containers/__tests__/createGalleryContainer.spec.ts`, `CHANGELOG.md`.
+- No XML, typings or dependency changes. `DatasourceService` (`@mendix/widget-plugin-grid`) is unchanged.
+- Patch-level fix.
diff --git a/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/specs/refresh-interval/spec.md b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/specs/refresh-interval/spec.md
new file mode 100644
index 0000000000..f0e9128d67
--- /dev/null
+++ b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/specs/refresh-interval/spec.md
@@ -0,0 +1,24 @@
+## ADDED Requirements
+
+### Requirement: Refresh time drives periodic datasource reload
+
+When the Gallery's `refreshInterval` property is greater than `0`, the widget SHALL reload its datasource `refreshInterval` seconds after the most recent data change. It SHALL NOT start a reload while the datasource is already loading.
+
+#### Scenario: Reload after configured interval
+
+- **WHEN** a Gallery is rendered with `refreshInterval` = 5 and its data does not change
+- **THEN** `datasource.reload()` is not called before 5 seconds and is called once at 5 seconds
+
+#### Scenario: Interval value converted to milliseconds
+
+- **WHEN** a Gallery is configured with `refreshInterval` = 5
+- **THEN** the datasource service receives a refresh interval of 5000 ms
+
+### Requirement: Refresh disabled at zero
+
+When `refreshInterval` is `0`, the Gallery SHALL NOT reload its datasource automatically.
+
+#### Scenario: No reload by default
+
+- **WHEN** a Gallery is rendered with `refreshInterval` = 0
+- **THEN** `datasource.reload()` is not called by the widget, however long it stays mounted
diff --git a/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/tasks.md b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/tasks.md
new file mode 100644
index 0000000000..06b4da7e2c
--- /dev/null
+++ b/packages/pluggableWidgets/gallery-web/openspec/changes/fix-refresh-interval-wiring/tasks.md
@@ -0,0 +1,17 @@
+## 1. Fix wiring
+
+- [x] 1.1 In `src/model/configs/Gallery.config.ts`, set `refreshIntervalMs: props.refreshInterval * 1000`
+- [x] 1.2 In `src/model/containers/Gallery.container.ts` `_02_queryBindings.init`, bind `GY.refreshInterval` to `config.refreshIntervalMs`
+
+## 2. Regression tests (`createGalleryContainer.spec.ts`)
+
+- [x] 2.1 Test: `refreshInterval: 5` gives `config.refreshIntervalMs` and `GY.refreshInterval` equal to 5000
+- [x] 2.2 Test (fake timers): after `setupService.setup()`, `datasource.reload` is not called at 4999 ms and is called once at 5000 ms
+- [x] 2.3 Test (fake timers): `refreshInterval: 0` means no reload after 60 s
+- [x] 2.4 Confirm RED without the fix (2.1 and 2.2 fail) and GREEN with it
+
+## 3. Changelog and verification
+
+- [x] 3.1 Add a "Fixed" entry under `[Unreleased]` in `CHANGELOG.md`
+- [x] 3.2 `pnpm run test` and `pnpm run lint` pass in `packages/pluggableWidgets/gallery-web`
+- [ ] 3.3 Manual QA in Studio Pro: Gallery with Refresh time = 5 picks up data changed elsewhere within ~5 s; with 0 it does not
diff --git a/packages/pluggableWidgets/gallery-web/src/model/configs/Gallery.config.ts b/packages/pluggableWidgets/gallery-web/src/model/configs/Gallery.config.ts
index 325d1e1cd0..acf7d398c0 100644
--- a/packages/pluggableWidgets/gallery-web/src/model/configs/Gallery.config.ts
+++ b/packages/pluggableWidgets/gallery-web/src/model/configs/Gallery.config.ts
@@ -28,7 +28,7 @@ export function galleryConfig(props: GalleryContainerProps): GalleryConfig {
     return {
         id,
         name: props.name,
-        refreshIntervalMs: 0,
+        refreshIntervalMs: props.refreshInterval * 1000,
         selectionEnabled: isSelectionEnabled(props),
         selectionType: selectionType(props),
         selectionMode: props.itemSelectionMode,
diff --git a/packages/pluggableWidgets/gallery-web/src/model/containers/Gallery.container.ts b/packages/pluggableWidgets/gallery-web/src/model/containers/Gallery.container.ts
index c773901f03..a83989432d 100644
--- a/packages/pluggableWidgets/gallery-web/src/model/containers/Gallery.container.ts
+++ b/packages/pluggableWidgets/gallery-web/src/model/containers/Gallery.container.ts
@@ -86,8 +86,9 @@ const _02_queryBindings: BindingGroup = {
         container.bind(GY.query).toInstance(DatasourceService).inSingletonScope();
         container.bind(GY.queryParams).toInstance(QueryParamsService).inSingletonScope();
     },
-    init(container, { mainGate }) {
+    init(container, { mainGate, config }) {
         container.bind(GY.queryGate).toConstant(mainGate);
+        container.bind(GY.refreshInterval).toConstant(config.refreshIntervalMs);
     },
     postInit(container) {
         // Create param service instance.
diff --git a/packages/pluggableWidgets/gallery-web/src/model/containers/__tests__/createGalleryContainer.spec.ts b/packages/pluggableWidgets/gallery-web/src/model/containers/__tests__/createGalleryContainer.spec.ts
index 56f13c9d19..008d4ad346 100644
--- a/packages/pluggableWidgets/gallery-web/src/model/containers/__tests__/createGalleryContainer.spec.ts
+++ b/packages/pluggableWidgets/gallery-web/src/model/containers/__tests__/createGalleryContainer.spec.ts
@@ -62,4 +62,40 @@ describe("createGalleryContainer", () => {
             selectionEnabled: false
         });
     });
+
+    it("bind refresh interval in milliseconds to the container", () => {
+        const [container] = createGalleryContainer({ ...mockContainerProps(), refreshInterval: 5 });
+
+        expect(container.get(CORE.config).refreshIntervalMs).toBe(5000);
+        expect(container.get(GY.refreshInterval)).toBe(5000);
+    });
+
+    describe("refresh interval", () => {
+        beforeEach(() => jest.useFakeTimers());
+        afterEach(() => jest.useRealTimers());
+
+        it("reloads datasource after the refresh interval", () => {
+            const props = { ...mockContainerProps(), refreshInterval: 5 };
+            const [container] = createGalleryContainer(props);
+            const dispose = container.get(CORE.setupService).setup();
+
+            jest.advanceTimersByTime(4999);
+            expect(props.datasource.reload).not.toHaveBeenCalled();
+            jest.advanceTimersByTime(1);
+            expect(props.datasource.reload).toHaveBeenCalledTimes(1);
+
+            dispose();
+        });
+
+        it("does not reload datasource when refresh interval is 0", () => {
+            const props = mockContainerProps();
+            const [container] = createGalleryContainer(props);
+            const dispose = container.get(CORE.setupService).setup();
+
+            jest.advanceTimersByTime(60_000);
+            expect(props.datasource.reload).not.toHaveBeenCalled();
+
+            dispose();
+        });
+    });
 });