diff --git a/procio.cr b/procio.cr
index a1d5fe3..147fa82 100644
--- a/procio.cr
+++ b/procio.cr
@@ -2,7 +2,7 @@ dir = Path[ENV.fetch("PROCIO_DIR", "/proc")]
 result = {} of String => Array(UInt64)
 time = Time.local.to_s("%s%9N")
 
-Dir.entries(dir).each do |entry|
+Dir.children(dir).each do |entry|
   next unless (entry =~ /^\d+$/) && File.directory?(dir/entry)
 
   begin