diff --git a/pkgs/os-specific/linux/kernel/linux-4.9.nix b/pkgs/os-specific/linux/kernel/linux-4.9.nix
index 2a73029c0c4..7ff53e36d48 100644
--- a/pkgs/os-specific/linux/kernel/linux-4.9.nix
+++ b/pkgs/os-specific/linux/kernel/linux-4.9.nix
@@ -1,11 +1,11 @@
 { stdenv, buildPackages, hostPlatform, fetchurl, perl, buildLinux, ... } @ args:
 
 import ./generic.nix (args // rec {
-  version = "4.9.77";
+  version = "4.9.78";
   extraMeta.branch = "4.9";
 
   src = fetchurl {
     url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz";
-    sha256 = "0p3hnfj0597vznvvjcb4ynciafnmvmnphkk6izcj67kgp4zvqabw";
+    sha256 = "1wy02y9nkwsi3bbcg5w4jzxp3f7aalylh1gh79bzi4knysz4zlfj";
   };
 } // (args.argsOverride or {}))