diff --git a/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix b/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
index 14cfc411fb40..7aa2f00ff30f 100644
--- a/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
+++ b/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
@@ -18,7 +18,7 @@
 
 buildPythonPackage rec {
   pname = "pylibjpeg-openjpeg";
-  version = "2.3.0";
+  version = "2.4.0";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -27,7 +27,7 @@ buildPythonPackage rec {
     owner = "pydicom";
     repo = "pylibjpeg-openjpeg";
     tag = "v${version}";
-    hash = "sha256-cCDnARElNn+uY+HQ39OnGJRz2vTz0I8s0Oe+qGvqM1o=";
+    hash = "sha256-T38Ur5NLF9iPTrDwT3GYgI6621A90zWP/leUxSqA70w=";
   };
 
   # don't use vendored openjpeg submodule: