diff --git a/package-lock.json b/package-lock.json
index a7e375cb..ffc35643 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "5.13.1",
       "license": "MIT",
       "dependencies": {
-        "@draggable/formeo-languages": "^3.7.0",
+        "@draggable/formeo-languages": "^3.8.0",
         "@draggable/i18n": "^1.0.7",
         "@draggable/tooltip": "^1.2.2",
         "lodash": "^4.17.21",
@@ -912,9 +912,9 @@
       }
     },
     "node_modules/@draggable/formeo-languages": {
-      "version": "3.7.0",
-      "resolved": "https://registry.npmjs.org/@draggable/formeo-languages/-/formeo-languages-3.7.0.tgz",
-      "integrity": "sha512-p1jwfFM3Lo+RAnSAbYz8SgXlqMXHRORFgKXc9nyD4zysj9gp7FkRMpUYwoQqEekF3ce5dF73+upX3PnKa2xexQ==",
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/@draggable/formeo-languages/-/formeo-languages-3.8.0.tgz",
+      "integrity": "sha512-Ou3lv9n40dM4D30YoITnKB5B8CfOimP96UW42Igpw5wk5veu9T4PsCj5ZiAvVzBdh2uFyeZV5xCZTaMknVlIUA==",
       "license": "MIT",
       "dependencies": {
         "@draggable/i18n": "1.1.1"
diff --git a/package.json b/package.json
index 124645c7..b978dd47 100644
--- a/package.json
+++ b/package.json
@@ -139,7 +139,7 @@
     "zod": "^4.4.3"
   },
   "dependencies": {
-    "@draggable/formeo-languages": "^3.7.0",
+    "@draggable/formeo-languages": "^3.8.0",
     "@draggable/i18n": "^1.0.7",
     "@draggable/tooltip": "^1.2.2",
     "lodash": "^4.17.21",
diff --git a/src/lib/js/i18n-fallbacks.test.mjs b/src/lib/js/i18n-fallbacks.test.mjs
new file mode 100644
index 00000000..a6404b52
--- /dev/null
+++ b/src/lib/js/i18n-fallbacks.test.mjs
@@ -0,0 +1,24 @@
+import { strict as assert } from 'node:assert'
+import { describe, it } from 'node:test'
+import { enUS } from '@draggable/formeo-languages'
+
+/**
+ * Keys used as `i18n.get(key, vars) || '<English fallback>'` across the editor, until
+ * @draggable/formeo-languages ships them. Each ships from 3.8.0 (Draggable/formeo-languages#87, refs #331).
+ * `duplicateFieldName`'s fallback is a template literal in code (duplicate-name-hint.js); the `{name}` form
+ * below is the token the shipped translation carries and `i18n.get` fills at call time.
+ */
+const FALLBACKS = {
+  reorderOption: 'Drag to reorder', // edit-panel-item.mjs
+  attributeNameRequired: 'Enter an attribute name', // common/actions.js
+  selectConfigKey: 'Select Configuration Key', // edit-panel/edit-panel.js
+  duplicateFieldName: 'Another field is also named "{name}", so their answers will share one key.', // edit-panel/duplicate-name-hint.js
+}
+
+describe('i18n fallbacks (#331)', () => {
+  it('@draggable/formeo-languages ships reorderOption, attributeNameRequired, selectConfigKey and duplicateFieldName, matching the English fallback', () => {
+    for (const [key, text] of Object.entries(FALLBACKS)) {
+      assert.equal(enUS[key], text, key)
+    }
+  })
+})