diff --git a/pkgs/tools/archivers/undmg/default.nix b/pkgs/tools/archivers/undmg/default.nix
new file mode 100644
index 000000000000..5cb7bf2c62fc
--- /dev/null
+++ b/pkgs/tools/archivers/undmg/default.nix
@@ -0,0 +1,27 @@
+{ stdenv, fetchFromGitHub, zlib, bzip2 }:
+
+stdenv.mkDerivation rec {
+  version = "1.0.2";
+  name = "undmg-${version}";
+
+  src = fetchFromGitHub {
+    owner = "matthewbauer";
+    repo = "undmg";
+    rev = "refs/tags/v${version}";
+    sha256 = "0w9vwvj9zbpsjkg251bwv9y10wjyjmh54q2piklz74w64rlbqblr";
+    name = "undmg-${version}";
+  };
+
+  buildInputs = [ zlib bzip2 ];
+
+  setupHook = ./setup-hook.sh;
+
+  installFlags = "PREFIX=\${out}";
+
+  meta = {
+    homepage = https://github.com/matthewbauer/undmg;
+    description = "Extract a DMG file";
+    license = stdenv.lib.licenses.gpl3;
+    platforms = stdenv.lib.platforms.all;
+  };
+}
diff --git a/pkgs/tools/archivers/undmg/setup-hook.sh b/pkgs/tools/archivers/undmg/setup-hook.sh
new file mode 100644
index 000000000000..e5c8dda23b6a
--- /dev/null
+++ b/pkgs/tools/archivers/undmg/setup-hook.sh
@@ -0,0 +1,5 @@
+unpackCmdHooks+=(_tryUnpackDmg)
+_tryUnpackDmg() {
+    if ! [[ "$curSrc" =~ \.dmg$ ]]; then return 1; fi
+    undmg < "$curSrc"
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 59da78dacf24..5746562b759e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3728,6 +3728,8 @@ let
 
   unzipNLS = lowPrio (unzip.override { enableNLS = true; });
 
+  undmg = callPackage ../tools/archivers/undmg { };
+
   uptimed = callPackage ../tools/system/uptimed { };
 
   urjtag = callPackage ../tools/misc/urjtag {