diff --git a/pkgs/development/python-modules/awkward-cpp/default.nix b/pkgs/development/python-modules/awkward-cpp/default.nix
index 00e01ba80bf1..2c3bd96fcf22 100644
--- a/pkgs/development/python-modules/awkward-cpp/default.nix
+++ b/pkgs/development/python-modules/awkward-cpp/default.nix
@@ -11,14 +11,14 @@
 
 buildPythonPackage rec {
   pname = "awkward-cpp";
-  version = "25";
+  version = "26";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-Fhq6XUt5CYz/l+Lf9WcCnt9rs3byMQIQs7hFexr2tjM=";
+    hash = "sha256-o3wI+JEmtjfUczRUob8/KLGNn3lH0h3GuhIDfYg7HGY=";
   };
 
   nativeBuildInputs = [