diff --git a/docs/requirements.txt b/docs/requirements.txt
index b8a22b494e7d..90e321eccb4b 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,11 +1,11 @@
+core/
 bigquery/
 bigtable/
-core/
 datastore/
 dns/
-error_reporting/
 language/
 logging/
+error_reporting/
 monitoring/
 pubsub/
 resource_manager/