diff --git a/package.json b/package.json
index 5bfb105527..41992244dc 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,6 @@
     "@iconify-json/lucide": "^1.2.123",
     "@types/hast": "^3.0.5",
     "@types/html-escaper": "^3.0.4",
-    "@types/js-yaml": "^4.0.9",
     "@types/mdast": "^4.0.4",
     "@types/node": "^26.2.0",
     "@types/viz.js": "^2.1.5",
@@ -95,7 +94,7 @@
     "cheerio": "^1.2.0",
     "classnames": "^2.5.1",
     "dotenv": "^17.4.2",
-    "js-yaml": "^4.3.1",
+    "js-yaml": "^5.3.0",
     "jsonpointer": "^5.0.1",
     "react": "^19.2.8",
     "react-dom": "^19.2.8",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 76cb66c2c0..e7a3c043f7 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -74,8 +74,8 @@ importers:
         specifier: ^17.4.2
         version: 17.4.2
       js-yaml:
-        specifier: ^4.3.1
-        version: 4.3.1
+        specifier: ^5.3.0
+        version: 5.3.0
       jsonpointer:
         specifier: ^5.0.1
         version: 5.0.1
@@ -173,9 +173,6 @@ importers:
       '@types/html-escaper':
         specifier: ^3.0.4
         version: 3.0.4
-      '@types/js-yaml':
-        specifier: ^4.0.9
-        version: 4.0.9
       '@types/mdast':
         specifier: ^4.0.4
         version: 4.0.4
@@ -1913,9 +1910,6 @@ packages:
   '@types/is-empty@1.2.3':
     resolution: {integrity: sha512-4J1l5d79hoIvsrKh5VUKVRA1aIdsOb10Hu5j3J2VfP/msDnfTdGPmNp2E1Wg+vs97Bktzo+MZePFFXSGoykYJw==}
 
-  '@types/js-yaml@4.0.9':
-    resolution: {integrity: sha512-k4MGaQl5TGo/iipqb2UDG2UwjXziSWkh0uysQelTlJpX1qGlpUZYm8PnO4DxG1qBomtJUdYJ6qR6xdIah10JLg==}
-
   '@types/jsesc@2.5.1':
     resolution: {integrity: sha512-9VN+6yxLOPLOav+7PwjZbxiID2bVaeq0ED4qSQmdQTdjnXJSaCVKTR58t15oqH1H5t8Ng2ZX1SabJVoN9Q34bw==}
 
@@ -3506,6 +3500,10 @@ packages:
     resolution: {integrity: sha512-CY6crGq313MX8GkwvB7tzgp99vjQxY1++5y10/BKN/GUfHqWaOGQMNZkBvqSzsZKWk/ijwHlWzzkLulsGHhjWQ==}
     hasBin: true
 
+  js-yaml@5.3.0:
+    resolution: {integrity: sha512-muutsYr+e2+d3rTgUGslq5rxbBlUy3cJ61IsHag2QNDQV+7zXWjkUpmALIajhrlLlrgRUiymj6U3zUr/TMK84Q==}
+    hasBin: true
+
   jsesc@3.1.0:
     resolution: {integrity: sha512-/sM3dO2FOzXjKQhJuo0Q173wf2KOo8t4I8vHy6lF9poUp7bKT0/NHE8fPX23PwfhnykfqnC2xRxOnVw5XuGIaA==}
     engines: {node: '>=6'}
@@ -7220,8 +7218,6 @@ snapshots:
 
   '@types/is-empty@1.2.3': {}
 
-  '@types/js-yaml@4.0.9': {}
-
   '@types/jsesc@2.5.1': {}
 
   '@types/json-schema@7.0.15': {}
@@ -9325,6 +9321,10 @@ snapshots:
     dependencies:
       argparse: 2.0.1
 
+  js-yaml@5.3.0:
+    dependencies:
+      argparse: 2.0.1
+
   jsesc@3.1.0: {}
 
   json-buffer@3.0.1: {}
diff --git a/scripts/validate-config-examples.mjs b/scripts/validate-config-examples.mjs
index cc6bc839f1..f8cdbb2c06 100644
--- a/scripts/validate-config-examples.mjs
+++ b/scripts/validate-config-examples.mjs
@@ -33,7 +33,7 @@ import fs from 'node:fs';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import Ajv2020 from 'ajv/dist/2020.js';
-import yaml from 'js-yaml';
+import * as yaml from 'js-yaml';
 
 const ROOT = path.resolve(fileURLToPath(import.meta.url), '..', '..');
 const SCHEMA_PATH = path.join(ROOT, 'public', 'mergify-configuration-schema.json');
diff --git a/src/components/Tables/OptionsTable.tsx b/src/components/Tables/OptionsTable.tsx
index c7b0654a07..6f88b2d98b 100644
--- a/src/components/Tables/OptionsTable.tsx
+++ b/src/components/Tables/OptionsTable.tsx
@@ -25,9 +25,11 @@ export function defToIdPrefix(def: string): string {
 function dumpDefault(value: unknown): string {
   return yaml
     .dump(value, {
-      noCompatMode: true,
       lineWidth: -1,
-      quotingType: '"',
+      // Not the default ('single'): these dumps are copy-pasted into configs, and
+      // double quotes keep Jinja templates like "{{ title }} '{{ name }}'" readable
+      // without escaping the inner single quotes.
+      quoteStyle: 'double',
       noRefs: true,
     })
     .replace(/\n$/, '');