diff --git a/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix b/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix
index f58ab5c95cc4..b4df3b7b33e8 100644
--- a/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix
+++ b/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix
@@ -1,13 +1,13 @@
 { stdenv, buildPackages, fetchgit, perl, buildLinux, ... } @ args:
 
 buildLinux (args // rec {
-  version = "4.18.2018.09.21";
+  version = "4.18.2018.10.12";
   modDirVersion = "4.18.0";
 
   src = fetchgit {
     url = "https://evilpiepirate.org/git/bcachefs.git";
-    rev = "2fe17e38d355271a8212a8123a9281e2f9df811f";
-    sha256 = "1p35qf7fdwpr8sz4alblmbq6rmhd87rwrrwk6xpgxsfkkhmf36d6";
+    rev = "d7f6da1d60ec24266301231538ff6f09716537ed";
+    sha256 = "05d7dh41nc35www8vmrn47wlf2mr2b8i4rm15vq3zgm32d0xv3lk";
   };
 
   extraConfig = "BCACHEFS_FS m";
diff --git a/pkgs/tools/filesystems/bcachefs-tools/default.nix b/pkgs/tools/filesystems/bcachefs-tools/default.nix
index ee1ee2e61789..75737e2da7fc 100644
--- a/pkgs/tools/filesystems/bcachefs-tools/default.nix
+++ b/pkgs/tools/filesystems/bcachefs-tools/default.nix
@@ -2,12 +2,12 @@
 , liburcu, zlib, libaio, zstd, lz4 }:
 
 stdenv.mkDerivation rec {
-  name = "bcachefs-tools-unstable-2018-08-22";
+  name = "bcachefs-tools-unstable-2018-10-12";
 
   src = fetchgit {
     url = "https://evilpiepirate.org/git/bcachefs-tools.git";
-    rev = "ebf97e8e01a8e76ff4bec23f29106430852c3081";
-    sha256 = "0f2ycin0gmi1a4fm7qln0c10zn451gljfbc2piy1fm768xqqrmld";
+    rev = "55fbb25501330038e1714905b9ddeb25d875c11c";
+    sha256 = "0cwzbyf133jc0fkc8nmjcvv3wmglqhyxda1hh10hgxrbq5vm39wx";
   };
 
   enableParallelBuilding = true;