diff --git a/web/package-lock.json b/web/package-lock.json
index 6a564dc..79ee4e4 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -15,7 +15,7 @@
 				"@codemirror/state": "^6.7.4",
 				"@codemirror/view": "^6.43.11",
 				"echarts": "^6.1.0",
-				"gridstack": "^11.5.0"
+				"gridstack": "^13.2.0"
 			},
 			"devDependencies": {
 				"@sveltejs/adapter-static": "^3.0.10",
@@ -751,9 +751,9 @@
 			}
 		},
 		"node_modules/gridstack": {
-			"version": "11.5.1",
-			"resolved": "https://registry.npmjs.org/gridstack/-/gridstack-11.5.1.tgz",
-			"integrity": "sha512-qgbH65F6TtyKyi9t6fCkrxLhiobgYR3RBjnK0AzZl+YO7hreMVlsZ1MFbkPV0+7ZhjXdvcaRSZp3UA1yAJqYBQ==",
+			"version": "13.2.0",
+			"resolved": "https://registry.npmjs.org/gridstack/-/gridstack-13.2.0.tgz",
+			"integrity": "sha512-+ImmOx6qd1wiF0EagY7e/pPdngh/6s0FM+r9hh4d8AsXslO51iHEuoAF7CMrXCFr0Xqd0X4WS/bqRLXtEUThug==",
 			"funding": [
 				{
 					"type": "paypal",
diff --git a/web/package.json b/web/package.json
index 56dd8df..8a686de 100644
--- a/web/package.json
+++ b/web/package.json
@@ -29,7 +29,7 @@
 		"@codemirror/state": "^6.7.4",
 		"@codemirror/view": "^6.43.11",
 		"echarts": "^6.1.0",
-		"gridstack": "^11.5.0"
+		"gridstack": "^13.2.0"
 	},
 	"overrides": {
 		"cookie": "^0.7.2"
diff --git a/web/src/routes/dashboards/[id]/+page.svelte b/web/src/routes/dashboards/[id]/+page.svelte
index 5e17c3b..968ae04 100644
--- a/web/src/routes/dashboards/[id]/+page.svelte
+++ b/web/src/routes/dashboards/[id]/+page.svelte
@@ -167,7 +167,12 @@
 	function setupGrid() {
 		if (!gridEl || !dashboard?.panels) return;
 		grid?.destroy(false);
-		grid = GridStack.init({ float: true, cellHeight: 60, column: 12 }, gridEl);
+		// gridstack 13 returns null when it cannot bind to the element, where
+		// 11 always handed back a grid. `gridEl` is guarded above so this
+		// should not happen -- but the type says it can, and a missed drag is
+		// better than a thrown error inside an effect.
+		grid = GridStack.init({ float: true, cellHeight: 60, column: 12 }, gridEl) ?? undefined;
+		if (!grid) return;
 		grid.on('change', (_event: Event, items: GridStackNode[]) => {
 			for (const item of items) {
 				const panel = dashboard?.panels?.find((p) => p.id === item.id);