diff --git a/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix b/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix
index a3275786b33..82326a2ee73 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 = "4.20.2019.01.23";
+  version = "4.20.2019.02.09";
   modDirVersion = "4.20.0";
 
   src = fetchgit {
     url = "https://evilpiepirate.org/git/bcachefs.git";
-    rev = "99750eab4d583132cf61f071082c7cf21f5295c0";
-    sha256 = "05wg9w5f68qg02yrciir9h1wx448869763hg3w7j23wc2qywhwqb";
+    rev = "09a546543006b60d44c4c51e7b40cd3ec7837a5e";
+    sha256 = "0p187vp9df0nnhawql0f2bj2sdim0f2b424106d41yxc8ayhz0d9";
   };
 
   extraConfig = "BCACHEFS_FS m";
diff --git a/pkgs/tools/filesystems/bcachefs-tools/default.nix b/pkgs/tools/filesystems/bcachefs-tools/default.nix
index eefc0beb1fc..fc55352fa12 100644
--- a/pkgs/tools/filesystems/bcachefs-tools/default.nix
+++ b/pkgs/tools/filesystems/bcachefs-tools/default.nix
@@ -3,12 +3,12 @@
 
 stdenv.mkDerivation rec {
   pname = "bcachefs-tools";
-  version = "2019-01-23";
+  version = "2019-02-09";
 
   src = fetchgit {
     url = "https://evilpiepirate.org/git/bcachefs-tools.git";
-    rev = "35fca2f044d375b1590f499cfd34bef38ca0f8f1";
-    sha256 = "1mmpwksszdi4n7zv3fm7qnmfk94m56d65lfw30553bnfm3yaz3k7";
+    rev = "17c5215c1c542dd7b6b4f891a0da16d8c98e0591";
+    sha256 = "1zm2lnvijfmz483m2nhxz1rhk7ghgh0c450nyiwi6wa7lc1y3339";
   };
 
   enableParallelBuilding = true;