diff --git a/pkgs/tools/system/datefudge/default.nix b/pkgs/tools/system/datefudge/default.nix
new file mode 100644
index 000000000000..d2d14ddd110b
--- /dev/null
+++ b/pkgs/tools/system/datefudge/default.nix
@@ -0,0 +1,40 @@
+{ stdenv, fetchgit }:
+
+stdenv.mkDerivation rec {
+  pname = "datefudge";
+  version = "1.2.1";
+  name = "${pname}-${version}";
+
+  src = fetchgit {
+    sha256 = "0l83kn6c3jr3wzs880zfa64rw81cqjjk55gjxz71rjf2balp64ps";
+    url = "git://anonscm.debian.org/users/robert/datefudge.git";
+    rev = "cd141c63bebe9b579109b2232b5e83db18f222c2";
+  };
+
+  patchPhase = ''
+    substituteInPlace Makefile \
+     --replace "/usr" "/" \
+     --replace "-o root -g root" ""
+    substituteInPlace datefudge.sh \
+     --replace "@LIBDIR@" "$out/lib/"
+    '';
+
+  preInstallPhase = "mkdir -P $out/lib/datefudge";
+
+  installFlags = [ "DESTDIR=$(out)" ];
+
+  postInstall = "chmod +x $out/lib/datefudge/datefudge.so";
+
+  meta = with stdenv.lib; {
+    description = "Fake the system date";
+    longDescription = ''
+      datefudge is a small utility that pretends that the system time is
+      different by pre-loading a small library which modifies the time,
+      gettimeofday and clock_gettime system calls.
+    '';
+    homepage = http://packages.qa.debian.org/d/datefudge.html;
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ leenaars ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a47c4ef23079..f5eb1e9c13da 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -728,6 +728,8 @@ in
 
   datamash = callPackage ../tools/misc/datamash { };
 
+  datefudge = callPackage ../tools/system/datefudge { };
+
   ddate = callPackage ../tools/misc/ddate { };
 
   deis = callPackage ../development/tools/deis {};