diff --git a/pyproject.toml b/pyproject.toml
index 7c65ee8..3a6f91d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ license = "GPL-3.0-or-later"
 [tool.poetry.dependencies]
 python = "3.8.*"
 tensorflow = "^2.4.1"
-tensorflow-io = "^0.17.1"
+biopython = "^1.78"
 
 [tool.poetry.dev-dependencies]
 isort = "^5.8.0"