diff --git a/requirements.txt b/requirements.txt
index 81193f0..0d2b31f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ lxml==4.9
 mordred==1.2
 numpy
 pandas
-pymongo==4.3
+pymongo
 pytest
 pytest-cov
 python-libsbml
@@ -13,4 +13,4 @@ scipy
 sphinxcontrib-napoleon
 tensorflow
 torch
-numpydoc
\ No newline at end of file
+numpydoc