diff --git a/pkgs/os-specific/linux/firmware/iwlwifi-3945-ucode/default.nix b/pkgs/os-specific/linux/firmware/iwlwifi-3945-ucode/default.nix
index c17d29cafa4..f3cff66ea5c 100644
--- a/pkgs/os-specific/linux/firmware/iwlwifi-3945-ucode/default.nix
+++ b/pkgs/os-specific/linux/firmware/iwlwifi-3945-ucode/default.nix
@@ -1,11 +1,11 @@
 {stdenv, fetchurl}:
 
 stdenv.mkDerivation {
-  name = "iwlwifi-3945-ucode-2.14.1.5";
+  name = "iwlwifi-3945-ucode-15.28.1.8";
   
   src = fetchurl {
-    url = http://intellinuxwireless.org/iwlwifi/downloads/iwlwifi-3945-ucode-2.14.1.5.tgz;
-    sha256 = "06gy21qkd4kj6pf3nsz5z3xkgmcafzrm1krywd8lbb8i56i3jkra";
+    url = http://www.intellinuxwireless.org/iwlwifi/downloads/iwlwifi-3945-ucode-15.28.1.8.tgz;
+    sha256 = "0pwilsk8m9f5ihlp3wlam485a52lkbj2di5990bnz2m6ina9j8v2";
   };
   
   buildPhase = "true";
diff --git a/pkgs/os-specific/linux/firmware/iwlwifi-4965-ucode/default.nix b/pkgs/os-specific/linux/firmware/iwlwifi-4965-ucode/default.nix
index 3b50d8688a4..b75eae6acf2 100644
--- a/pkgs/os-specific/linux/firmware/iwlwifi-4965-ucode/default.nix
+++ b/pkgs/os-specific/linux/firmware/iwlwifi-4965-ucode/default.nix
@@ -1,11 +1,11 @@
 {stdenv, fetchurl}:
 
 stdenv.mkDerivation rec {
-  name = "iwlwifi-4965-ucode-4.44.17";
+  name = "iwlwifi-4965-ucode-228.57.1.21";
   
   src = fetchurl {
     url = "http://intellinuxwireless.org/iwlwifi/downloads/" + name + ".tgz";
-    sha256 = "1mfnxsp58jvh0njvwaxrkbiggbzr4jd0hk314hxfwyjpjdd2hj6w";
+    sha256 = "1rry0kpzszxk60h5gb94advzi009010xb332iyvfpaiwbj6aiyas";
   };
   
   buildPhase = "true";