diff --git a/sdk/lib/_internal/pub/lib/src/entrypoint.dart b/sdk/lib/_internal/pub/lib/src/entrypoint.dart
index 16b19a59259..b580f49444f 100644
--- a/sdk/lib/_internal/pub/lib/src/entrypoint.dart
+++ b/sdk/lib/_internal/pub/lib/src/entrypoint.dart
@@ -254,7 +254,11 @@ class Entrypoint {
                 result.stderr.join('\n'));
           }
         });
-      }));
+      })).whenComplete(() {
+        // Don't return this future, since we have no need to wait for the
+        // server to fully shut down.
+        server.close();
+      });
     });
   }