diff --git a/pkgs/development/python-modules/plac/default.nix b/pkgs/development/python-modules/plac/default.nix
index 9261133bc925..bf66f7d01f19 100644
--- a/pkgs/development/python-modules/plac/default.nix
+++ b/pkgs/development/python-modules/plac/default.nix
@@ -5,11 +5,11 @@
 }:
 buildPythonPackage rec {
   pname = "plac";
-  version = "1.2.0";
+  version = "1.3.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "ca03587234e5bdd2a3fa96f19a04a01ebb5b0cd66d48ecb5a54d42bc9b287320";
+    sha256 = "51e332dabc2aed2cd1f038be637d557d116175101535f53eaa7ae854a00f2a74";
   };
 
   checkPhase = ''