diff --git a/pkgs/development/python-modules/awkward-cpp/default.nix b/pkgs/development/python-modules/awkward-cpp/default.nix
index 099691b3a80b..0063cd3f851f 100644
--- a/pkgs/development/python-modules/awkward-cpp/default.nix
+++ b/pkgs/development/python-modules/awkward-cpp/default.nix
@@ -11,13 +11,13 @@
 
 buildPythonPackage rec {
   pname = "awkward-cpp";
-  version = "42";
+  version = "43";
   pyproject = true;
 
   src = fetchPypi {
     pname = "awkward_cpp";
     inherit version;
-    hash = "sha256-1sSJ7L6asuqjTUXM7OxVt0gHs2P+yiO4123IvCBzVew=";
+    hash = "sha256-we11WW7IKvZm2ghLW/gF2bcsg1MtA10rZeB5WQXSXq0=";
   };
 
   build-system = [