diff --git a/pkgs/development/python-modules/widlparser/default.nix b/pkgs/development/python-modules/widlparser/default.nix
index 83c2bc8da79e..4d5a99223604 100644
--- a/pkgs/development/python-modules/widlparser/default.nix
+++ b/pkgs/development/python-modules/widlparser/default.nix
@@ -10,14 +10,14 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "widlparser";
-  version = "1.4.0";
+  version = "1.5.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "plinss";
     repo = "widlparser";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-vYDldZH49GfNRjKh3x0DX05jYFOLQtA//7bw+B16O1M=";
+    hash = "sha256-vnXel2LT8dYjTypJf6TTB8btkdGC0ljeLJuY7WUE55I=";
   };
 
   build-system = [
@@ -29,7 +29,7 @@ buildPythonPackage (finalAttrs: {
 
   pythonImportsCheck = [ "widlparser" ];
 
-  # https://github.com/plinss/widlparser/blob/v1.4.0/.github/workflows/test.yml
+  # https://github.com/plinss/widlparser/blob/v1.5.0/.github/workflows/test.yml
   checkPhase = ''
     runHook preCheck