diff --git a/fly.toml b/fly.toml
index f58a672..08f79c8 100644
--- a/fly.toml
+++ b/fly.toml
@@ -44,6 +44,7 @@ console_command = '/rails/bin/rails console'
   MALLOC_CONF = "dirty_decay_ms:0,muzzy_decay_ms:0,narenas:2,background_thread:true,thp:never"
   ORG_NAME = "Tokyo RubyKaigi 12 Team"
   RAILS_ENV = "production"
+  RAILS_LOG_TO_STDOUT = "1"
   RAILS_SERVE_STATIC_FILES = "1"
   S3_FILES_BUCKET = "trk12-sponsor-app"
   S3_FILES_PREFIX = "production/"