diff --git a/lib/logstash/outputs/s3.rb b/lib/logstash/outputs/s3.rb
index 8538d4b4..34cca89c 100644
--- a/lib/logstash/outputs/s3.rb
+++ b/lib/logstash/outputs/s3.rb
@@ -275,7 +275,7 @@ def periodic_interval
 
   public
   def get_temporary_filename(page_counter = 0)
-    current_time = Time.now
+    current_time = Time.now.utc
     filename = "ls.s3.#{Socket.gethostname}.#{current_time.strftime("%Y-%m-%dT%H.%M")}"
 
     if @tags.size > 0