diff --git a/pkgs/os-specific/linux/hdparm/default.nix b/pkgs/os-specific/linux/hdparm/default.nix
index 2c5fd70ac95..cbdbefeb2a0 100644
--- a/pkgs/os-specific/linux/hdparm/default.nix
+++ b/pkgs/os-specific/linux/hdparm/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  name = "hdparm-9.55";
+  name = "hdparm-9.56";
 
   src = fetchurl {
     url = "mirror://sourceforge/hdparm/${name}.tar.gz";
-    sha256 = "1ivdvrzimaayiq03by8mcq0mhmdljndj06h012zkdpw34irnpixm";
+    sha256 = "1np42qyhb503khvacnjcl3hb1dqly68gj0a1xip3j5qhbxlyvybg";
 
   };