diff --git a/human_autosomes.txt b/human_autosomes.txt
index ec39848..ceabba9 100644
--- a/human_autosomes.txt
+++ b/human_autosomes.txt
@@ -7,8 +7,8 @@ chr6
 chr7
 chr8
 chr9
-chr11
 chr10
+chr11
 chr12
 chr13
 chr14
@@ -16,7 +16,7 @@ chr15
 chr16
 chr17
 chr18
-chr20
 chr19
+chr20
+chr21
 chr22
-chr21
\ No newline at end of file