diff --git a/pkgs/applications/misc/worker/default.nix b/pkgs/applications/misc/worker/default.nix
index 9657dd99e211..69421e288d34 100644
--- a/pkgs/applications/misc/worker/default.nix
+++ b/pkgs/applications/misc/worker/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "worker-${version}";
-  version = "3.15.4";
+  version = "4.0.0";
 
   src = fetchurl {
     url = "http://www.boomerangsworld.de/cms/worker/downloads/${name}.tar.gz";
-    sha256 = "03zixi4yqcl05blyn09mlgk102yjbir8bp0yi4czd1sng0rhfc9x";
+    sha256 = "0cs1sq7zpp787r1irhqk5pmxa26rjz55mbgda4823z9zkzwfxy19";
   };
 
   buildInputs = [ libX11 ];