diff --git a/telegraf_pressure_stall.cr b/telegraf_pressure_stall.cr
index a3e6d61..965761e 100644
--- a/telegraf_pressure_stall.cr
+++ b/telegraf_pressure_stall.cr
@@ -1,5 +1,5 @@
 dir = Path[ENV.fetch("PSI_DIR", "/proc/pressure")]
-time = Time.local.to_s("%s%9N")
+time = Time.utc.to_s("%s%9N")
 
 Dir.children(dir).each do |ressource|
   File.read_lines(dir/ressource).each do |line|