diff --git a/pkgs/development/python-modules/pyaml/default.nix b/pkgs/development/python-modules/pyaml/default.nix
index 96ae8df32df0..dc835ea457f7 100644
--- a/pkgs/development/python-modules/pyaml/default.nix
+++ b/pkgs/development/python-modules/pyaml/default.nix
@@ -7,11 +7,11 @@
 
 buildPythonPackage rec {
   pname = "pyaml";
-  version = "23.7.0";
+  version = "23.9.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-DFELu4k4MJQA4LHkesFv2Q5W1lKAWpNBcSh4ZxjzNUY=";
+    sha256 = "sha256-TiAw9fwNO1eEo6eFO6eLGujelDxtulUHh2VQxb0Y84c=";
   };
 
   propagatedBuildInputs = [