diff --git a/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix b/pkgs/os-specific/linux/kernel/linux-testing-bcachefs.nix
index d8b9fc2a61e..111b5a4cc90 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, fetchpatch, perl, buildLinux, ... } @ args:
 
 buildLinux (args // rec {
-  version = "5.0.2019.05.29";
-  modDirVersion = "5.0.0";
+  version = "5.1.2019.07.11";
+  modDirVersion = "5.1.0";
 
   src = fetchgit {
     url = "https://evilpiepirate.org/git/bcachefs.git";
-    rev = "7e42539c80470cb655bbc46cd0f144de6c644523";
-    sha256 = "0f7z3awfzdg56rby6z8dh9v9bzyyfn53zgwxmk367mfi0wqk49d2";
+    rev = "44dc1f269553f33cce43628444970efb85a7e802";
+    sha256 = "1i32s15r0a844dnp3h9ac37xm9h69g0jn75pqz2gbfrafpk3pac1";
   };
 
   extraConfig = "BCACHEFS_FS m";
diff --git a/pkgs/tools/filesystems/bcachefs-tools/default.nix b/pkgs/tools/filesystems/bcachefs-tools/default.nix
index 48926a3aade..5e75346e46b 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 = "2019-05-29";
+  version = "2019-07-11";
 
   src = fetchgit {
     url = "https://evilpiepirate.org/git/bcachefs-tools.git";
-    rev = "34b93747051055c1076add36f4730c7715e27f07";
-    sha256 = "1z6ih0mssa9y9yr3v0dzrflliqz8qfdkjb29p9nqbpg8iqi45fa8";
+    rev = "33c91e2ff4e228cb618ca22d642a34ec1c2cf0ef";
+    sha256 = "0glldbnda61xwf7309mk48qmxqnipjmcgsibab77nr6v3bg13ip1";
   };
 
   enableParallelBuilding = true;