diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index f268265a83..66367587b2 100644
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -480,6 +480,8 @@ fi
 [Unit]
 Description=PostgreSQL database server
 Documentation=man:postgres(1)
+After=network-online.target
+Wants=network-online.target
 
 [Service]
 Type=notify