diff --git a/pkgs/os-specific/linux/mcelog/default.nix b/pkgs/os-specific/linux/mcelog/default.nix
index 2f0736318044..13bdbcc19f6f 100644
--- a/pkgs/os-specific/linux/mcelog/default.nix
+++ b/pkgs/os-specific/linux/mcelog/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "mcelog";
-  version = "165";
+  version = "166";
 
   src = fetchFromGitHub {
     owner  = "andikleen";
     repo   = "mcelog";
     rev    = "v${version}";
-    sha256 = "1g242qz3jj7amgar497bbd8krljspwy89g1r32wz3fdpkn9m1w8s";
+    sha256 = "0q76lf5yrjq7b96ynj5dbf9ll94ymiab1b9106xpb4vbiwz0ia7w";
   };
 
   postPatch = ''