diff --git a/lib/workers/branch/get-updated.ts b/lib/workers/branch/get-updated.ts
index 6e874f7ab07b3f3902dfbc960e13f3632d33f572..f5855407afc7ac58c80820da72aca43cadd1fd48 100644
--- a/lib/workers/branch/get-updated.ts
+++ b/lib/workers/branch/get-updated.ts
@@ -122,6 +122,10 @@ export async function getUpdatedPackageFiles(
           }
         }
       } else {
+        logger.debug(
+          { manager },
+          'isLockFileUpdate without updateLockedDependency'
+        );
         nonUpdatedFileContents[packageFile] = packageFileContent;
       }
     } else {