diff --git a/pkgs/os-specific/linux/zfs/unstable.nix b/pkgs/os-specific/linux/zfs/unstable.nix
index fe504e9db6e2..849a2ee4473d 100644
--- a/pkgs/os-specific/linux/zfs/unstable.nix
+++ b/pkgs/os-specific/linux/zfs/unstable.nix
@@ -15,20 +15,20 @@ callPackage ./generic.nix args {
   # this attribute is the correct one for this package.
   kernelModuleAttribute = "zfs_unstable";
   # check the release notes for compatible kernels
-  kernelCompatible = kernel: kernel.kernelOlder "6.12";
+  kernelCompatible = kernel: kernel.kernelOlder "6.13";
 
   # this package should point to a version / git revision compatible with the latest kernel release
   # IMPORTANT: Always use a tagged release candidate or commits from the
   # zfs-<version>-staging branch, because this is tested by the OpenZFS
   # maintainers.
-  version = "2.3.0-rc3";
+  version = "2.3.0-rc4";
   # rev = "";
 
   tests = {
     inherit (nixosTests.zfs) unstable;
   };
 
-  hash = "sha256-9s8Sb5+vksFsFI2Ra432QXexmbX3R17dzYzzLZviel0=";
+  hash = "sha256-6O+XQvggyVCZBYpx8/7jbq15tLZsvzmDqp+AtEb9qFU=";
 
   extraLongDescription = ''
     This is "unstable" ZFS, and will usually be a pre-release version of ZFS.