diff --git a/pkgs/applications/misc/pell/default.nix b/pkgs/applications/misc/pell/default.nix
index ba3e63fd2f6a..d55c7a2af12b 100644
--- a/pkgs/applications/misc/pell/default.nix
+++ b/pkgs/applications/misc/pell/default.nix
@@ -2,21 +2,22 @@
 
 stdenv.mkDerivation rec {
   pname = "pell";
-  version = "0.0.3";
+  version = "0.0.4";
   name = "${pname}-${version}";
 
   src = fetchFromGitHub {
     owner = "ebzzry";
     repo = pname;
-    rev = "c25ddd257dd1d1481df5ccac0f99f6bee1ee1ebb";
-    sha256 = "0fharadbf63mgpmafs8d4k9h83jj9naxldp240xnc5gkna32a07y";
+    rev = "f251625ece6bb5517227970287119e7d2dfcea8b";
+    sha256 = "0k8m1lv2kyrs8fylxmbgxg3jn65g57frf2bndc82gkr5svwb554a";
   };
 
   installPhase = ''
     mkdir -p $out/bin
     mkdir -p $out/share
     cp pell $out/bin
-    cp resources/notification.mp3 $out/share
+    cp resources/online.mp3 $out/share
+    cp resources/offline.mp3 $out/share
     chmod +x $out/bin/pell
   '';
 
@@ -24,7 +25,8 @@ stdenv.mkDerivation rec {
     substituteInPlace $out/bin/pell --replace "/usr/bin/env scsh" "${scsh}/bin/scsh"
     substituteInPlace $out/bin/pell --replace "(play " "(${sox}/bin/play "
     substituteInPlace $out/bin/pell --replace "(notify-send " "(${libnotify}/bin/notify-send "
-    substituteInPlace $out/bin/pell --replace "/usr/share/pell/notification.mp3" "$out/share/notification.mp3"
+    substituteInPlace $out/bin/pell --replace "/usr/share/pell/online.mp3" "$out/share/online.mp3"
+    substituteInPlace $out/bin/pell --replace "/usr/share/pell/offline.mp3" "$out/share/offline.mp3"
   '';
 
   meta = with stdenv.lib; {