diff --git a/config/schedule.rb b/config/schedule.rb
index b8f8b30e..82b1b31d 100644
--- a/config/schedule.rb
+++ b/config/schedule.rb
@@ -19,7 +19,7 @@
 
 # Learn more: http://github.com/javan/whenever
 
-set :output, Whenever.path + '/log/whenever.log'
+set :output, Whenever.path + '/log/whenever_$(date +%Y%m%d%H%M%S).log'
 
 every 1.day, at: '3:00 am' do
   rake 'detect_exercise_anomalies:with_at_least[50,50]'