diff --git a/pkgs/development/python-modules/pulp/default.nix b/pkgs/development/python-modules/pulp/default.nix
index a98c7a518d2..73d367f5eb1 100644
--- a/pkgs/development/python-modules/pulp/default.nix
+++ b/pkgs/development/python-modules/pulp/default.nix
@@ -7,11 +7,11 @@
 
 buildPythonPackage rec {
   pname = "PuLP";
-  version = "2.3";
+  version = "2.3.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "9d8ecf532868cc31fa9ff59ee5d5b2049600c5c902c18c794a2bad677c1f92e5";
+    sha256 = "5bbe53f854fb3b689e4faacac5bdb5fa576cb270fc12c78edef827dd46a4fb50";
   };
 
   propagatedBuildInputs = [ pyparsing amply ];