diff --git a/pkgs/tools/filesystems/ceph/0.94-pre.nix b/pkgs/tools/filesystems/ceph/0.94-pre.nix
new file mode 100644
index 000000000000..e496dcccd825
--- /dev/null
+++ b/pkgs/tools/filesystems/ceph/0.94-pre.nix
@@ -0,0 +1,13 @@
+{ callPackage, fetchgit, ... } @ args:
+
+callPackage ./generic.nix (args // rec {
+  version = "0.94.3";
+
+  src = fetchgit {
+    url = "https://github.com/ceph/ceph.git";
+    rev = "c19b0fc1aa2834ae3027b07a02aebe9639fc2ca7";
+    sha256 = "1h1y5jh2bszia622rmwdblb3cpkpd0mijahkaiasr30jwpkmzh0i";
+  };
+
+  patches = [ ./fix-pgrefdebugging.patch ];
+})
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 34e64195f186..98e2fa37b2fb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1066,6 +1066,7 @@ let
   libceph = ceph.lib;
   ceph-0_80 = callPackage ../tools/filesystems/ceph/0.80.nix { };
   ceph-0_94 = callPackage ../tools/filesystems/ceph/0.94.nix { };
+  ceph-0_94-pre = callPackage ../tools/filesystems/ceph/0.94-pre.nix { };
   ceph = callPackage ../tools/filesystems/ceph { };
   ceph-dev = lowPrio (callPackage ../tools/filesystems/ceph/dev.nix { });
   ceph-git = lowPrio (callPackage ../tools/filesystems/ceph/git.nix { });