diff --git a/nixos/doc/manual/release-notes/rl-2311.section.md b/nixos/doc/manual/release-notes/rl-2311.section.md
index 7af4a99906cf..724acd7b4099 100644
--- a/nixos/doc/manual/release-notes/rl-2311.section.md
+++ b/nixos/doc/manual/release-notes/rl-2311.section.md
@@ -38,6 +38,8 @@
   true`. This is generally safe behavior, but for anyone needing to opt out from
   the check `users.users.${USERNAME}.ignoreShellProgramCheck = true` will do the job.
 
+- Cassandra now defaults to 4.x, updated from 3.11.x.
+
 ## New Services {#sec-release-23.11-new-services}
 
 - [MCHPRS](https://github.com/MCHPR/MCHPRS), a multithreaded Minecraft server built for redstone. Available as [services.mchprs](#opt-services.mchprs.enable).
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 77aaee8aa696..047577557659 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -26227,7 +26227,7 @@ with pkgs;
     jre = pkgs.jdk11_headless;
     python = python3;
   };
-  cassandra = cassandra_3_11;
+  cassandra = cassandra_4;
 
   cassandra-cpp-driver = callPackage ../development/libraries/cassandra-cpp-driver/default.nix { };