diff --git a/pkgs/os-specific/linux/kernel/linux-copperhead-hardened.nix b/pkgs/os-specific/linux/kernel/linux-copperhead-hardened.nix
index 304c085f4aa..0e39bc421c9 100644
--- a/pkgs/os-specific/linux/kernel/linux-copperhead-hardened.nix
+++ b/pkgs/os-specific/linux/kernel/linux-copperhead-hardened.nix
@@ -3,9 +3,9 @@
 with stdenv.lib;
 
 let
-  version = "4.15.3";
+  version = "4.15.4";
   revision = "a";
-  sha256 = "1fxdllg60hwlbmjijcj7w6c3xz0rf9268f12qy45diahmydyccgc";
+  sha256 = "0j7nla8vjrxr82nfx8dl34qk8b56piwqbndqch9rv7plgl30hkj7";
 
   # modVersion needs to be x.y.z, will automatically add .0 if needed
   modVersion = concatStrings (intersperse "." (take 3 (splitString "." "${version}.0")));