diff --git a/.changeset/slimy-trains-tell.md b/.changeset/slimy-trains-tell.md
new file mode 100644
index 0000000000..c60d0fab76
--- /dev/null
+++ b/.changeset/slimy-trains-tell.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-linguist-backend': patch
+---
+
+Fix: CatalogClient call without token
diff --git a/plugins/linguist-backend/src/api/LinguistBackendClient.ts b/plugins/linguist-backend/src/api/LinguistBackendClient.ts
index 5a84201bcb..53da0bee22 100644
--- a/plugins/linguist-backend/src/api/LinguistBackendClient.ts
+++ b/plugins/linguist-backend/src/api/LinguistBackendClient.ts
@@ -130,7 +130,8 @@ export class LinguistBackendClient implements LinguistBackendApi {
     const allEntities = await this.store.getAllEntities();
 
     for (const entityRef of allEntities) {
-      const result = await this.catalogApi.getEntityByRef(entityRef);
+      const { token } = await this.tokenManager.getToken();
+      const result = await this.catalogApi.getEntityByRef(entityRef, { token });
 
       if (!result) {
         this.logger?.info(