diff --git a/.changeset/itchy-items-serve.md b/.changeset/itchy-items-serve.md
new file mode 100644
index 0000000000..df39751e9d
--- /dev/null
+++ b/.changeset/itchy-items-serve.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-techdocs-backend': patch
+---
+
+Use external url for static docs
diff --git a/plugins/techdocs-backend/src/service/router.ts b/plugins/techdocs-backend/src/service/router.ts
index 8951bc4664..7f6ff60fdd 100644
--- a/plugins/techdocs-backend/src/service/router.ts
+++ b/plugins/techdocs-backend/src/service/router.ts
@@ -108,7 +108,7 @@ export async function createRouter({
     const { kind, namespace, name } = req.params;
     const storageUrl =
       config.getOptionalString('techdocs.storageUrl') ??
-      `${await discovery.getBaseUrl('techdocs')}/static/docs`;
+      `${await discovery.getExternalBaseUrl('techdocs')}/static/docs`;
 
     const catalogUrl = await discovery.getBaseUrl('catalog');
     const triple = [kind, namespace, name].map(encodeURIComponent).join('/');