diff --git a/pkgs/development/python-modules/awkward-cpp/default.nix b/pkgs/development/python-modules/awkward-cpp/default.nix
index 4dcf509af1af..3609a1db67f5 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 = "6";
+  version = "9";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-WOMq+oqkTDZedk9LXQdjfHmnm+LafPuqNGnYvSawv6I=";
+    hash = "sha256-2xyRwh+IuJo5tGF27cZ6CLN/coPBai7VFZ48h0YTxho=";
   };
 
   nativeBuildInputs = [