diff --git a/requirements.txt b/requirements.txt
index 0a9a5ad998257d6133c1237b17c1e0d8353900ba..12a3745b45dee5235eb03f488cae55f314cd4993 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,5 @@ numpy
 scipy
 pandas
 cobra[all]
-matplotlib
\ No newline at end of file
+matplotlib
+biopython
\ No newline at end of file