diff --git a/requirements/science.txt b/requirements/science.txt
index c345da99..636f98f4 100644
--- a/requirements/science.txt
+++ b/requirements/science.txt
@@ -1,8 +1,8 @@
-iopath
+biopython
 lmdb
 ml_collections
 scipy
 tensorboardX
 tokenizers
-biopython
-ipdb
+iopath
+ipdb
\ No newline at end of file