diff --git a/pkgs/development/python-modules/pyyaml/default.nix b/pkgs/development/python-modules/pyyaml/default.nix
index 4d1d16b0f123..95ceeab3a04b 100644
--- a/pkgs/development/python-modules/pyyaml/default.nix
+++ b/pkgs/development/python-modules/pyyaml/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "PyYAML";
-  version = "5.2";
+  version = "5.3.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "c0ee8eca2c582d29c3c2ec6e2c4f703d1b7f1fb10bc72317355a746057e7346c";
+    sha256 = "0pb4zvkfxfijkpgd1b86xjsqql97ssf1knbd1v53wkg1qm9cgsmq";
   };
 
   # force regeneration using Cython