diff --git a/procio.cr b/procio.cr
index 147fa82..03688ae 100644
--- a/procio.cr
+++ b/procio.cr
@@ -1,6 +1,6 @@
 dir = Path[ENV.fetch("PROCIO_DIR", "/proc")]
 result = {} of String => Array(UInt64)
-time = Time.local.to_s("%s%9N")
+time = Time.utc.to_s("%s%9N")
 
 Dir.children(dir).each do |entry|
   next unless (entry =~ /^\d+$/) && File.directory?(dir/entry)