diff --git a/pkgs/development/python-modules/mlflow/default.nix b/pkgs/development/python-modules/mlflow/default.nix
index 2940c111e5dc..b50d98513a2f 100644
--- a/pkgs/development/python-modules/mlflow/default.nix
+++ b/pkgs/development/python-modules/mlflow/default.nix
@@ -25,12 +25,12 @@
 
 buildPythonPackage rec {
   pname = "mlflow";
-  version = "1.18.0";
+  version = "1.20.1";
   disabled = isPy27;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "8942089589d08c05c8a7fc66828c02a9233be462c421881b50bc2a0b183dfdbe";
+    sha256 = "71764443c4942f181fee2d5bf44dd74a0507bcc5b62a1f1e08079d1f40a15fc0";
   };
 
   # run into https://stackoverflow.com/questions/51203641/attributeerror-module-alembic-context-has-no-attribute-config