diff --git a/.changeset/rnd-11876-embed-standalone-turbo-output.md b/.changeset/rnd-11876-embed-standalone-turbo-output.md
new file mode 100644
index 000000000..14f556179
--- /dev/null
+++ b/.changeset/rnd-11876-embed-standalone-turbo-output.md
@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix the docs embed widget shipping a stale script: declare the embed package's `standalone/` bundle as a Turbo build output. Because it wasn't declared, changes confined to the standalone widget (which compiles to `standalone/` but not `dist/`) didn't invalidate the downstream `generate` cache that copies it into the app, so the deployed widget could lag the source — e.g. the `clipboard-write` permission on the widget iframe never reached production, breaking the copy button in the Assistant embed.
diff --git a/packages/embed/turbo.json b/packages/embed/turbo.json
new file mode 100644
index 000000000..91a6fd634
--- /dev/null
+++ b/packages/embed/turbo.json
@@ -0,0 +1,8 @@
+{
+    "extends": ["//"],
+    "tasks": {
+        "build": {
+            "outputs": ["dist/**", "standalone/**"]
+        }
+    }
+}