diff --git a/pkgs/development/python-modules/gpaw/default.nix b/pkgs/development/python-modules/gpaw/default.nix
index 913f1616a07d..e359c78c66f8 100644
--- a/pkgs/development/python-modules/gpaw/default.nix
+++ b/pkgs/development/python-modules/gpaw/default.nix
@@ -74,13 +74,13 @@ let
 
 in buildPythonPackage rec {
   pname = "gpaw";
-  version = "22.8.0";
+  version = "23.9.1";
 
   src = fetchFromGitLab {
     owner = "gpaw";
     repo = pname;
     rev = version;
-    hash = "sha256-Kgf8yuGua7mcGP+jVVmbE8JCsbrfzewRTRt3ihq9YX4=";
+    hash = "sha256-9nnK4ksTFATO6HexnxfMiih/yoY/noyJZXZOaDG/2kc=";
   };
 
   # `inetutils` is required because importing `gpaw`, as part of