diff --git a/pkgs/applications/window-managers/i3/lock-fancy.nix b/pkgs/applications/window-managers/i3/lock-fancy.nix
index 6c53c51551ac..e28a9cf75be8 100644
--- a/pkgs/applications/window-managers/i3/lock-fancy.nix
+++ b/pkgs/applications/window-managers/i3/lock-fancy.nix
@@ -3,13 +3,13 @@
 }:
 
 stdenv.mkDerivation rec {
-  rev = "546ce2e71bd2339f2134904c7d22062e86105b46";
-  name = "i3lock-fancy-unstable-2016-10-13_rev${builtins.substring 0 7 rev}";
+  rev = "3734fba160166006521e513f5734eb76ac6aa48f";
+  name = "i3lock-fancy-unstable-2017-12-14_rev${builtins.substring 0 7 rev}";
   src = fetchFromGitHub {
     owner = "meskarune";
     repo = "i3lock-fancy";
     inherit rev;
-    sha256 = "1pbxydwdfd7jlw3b8cnlwlrkqlyh5jyanfhjybndqmacd3y8vplb";
+    sha256 = "1bg4xds2hmbq8rp6azbdqvgp1aaq5y1bp05cfwqqm6y3sjw7ywzl";
   };
   patchPhase = ''
     sed -i -e "s|(mktemp)|(${coreutils}/bin/mktemp)|" lock
@@ -18,12 +18,12 @@ stdenv.mkDerivation rec {
     sed -i -e "s|convert |${imagemagick.out}/bin/convert |" lock
     sed -i -e "s|awk -F|${gawk}/bin/awk -F|" lock
     sed -i -e "s| awk | ${gawk}/bin/awk |" lock
-    sed -i -e "s|i3lock -n |${i3lock-color}/bin/i3lock-color -n |" lock
-    sed -i -e 's|ICON="$SCRIPTPATH/icons/lockdark.png"|ICON="'$out'/share/i3lock-fancy/icons/lockdark.png"|' lock
-    sed -i -e 's|ICON="$SCRIPTPATH/icons/lock.png"|ICON="'$out'/share/i3lock-fancy/icons/lock.png"|' lock
+    sed -i -e "s|i3lock -i |${i3lock-color}/bin/i3lock-color -i |" lock
+    sed -i -e 's|icon="$scriptpath/icons/lockdark.png"|icon="'$out'/share/i3lock-fancy/icons/lockdark.png"|' lock
+    sed -i -e 's|icon="$scriptpath/icons/lock.png"|icon="'$out'/share/i3lock-fancy/icons/lock.png"|' lock
     sed -i -e "s|getopt |${getopt}/bin/getopt |" lock
     sed -i -e "s|fc-match |${fontconfig.bin}/bin/fc-match |" lock
-    sed -i -e "s|SHOT=(import -window root)|SHOT=(${scrot}/bin/scrot -z)|" lock
+    sed -i -e "s|shot=(import -window root)|shot=(${scrot}/bin/scrot -z)|" lock
   '';
   installPhase = ''
     mkdir -p $out/bin $out/share/i3lock-fancy/icons