diff --git a/pkgs/build-support/grsecurity/default.nix b/pkgs/build-support/grsecurity/default.nix
index 3bf40a2e8d6b..db450ab9eb99 100644
--- a/pkgs/build-support/grsecurity/default.nix
+++ b/pkgs/build-support/grsecurity/default.nix
@@ -33,7 +33,7 @@ let
 
     grKernel = if cfg.stable
                then mkKernel pkgs.linux_3_14 stable-patch
-               else mkKernel pkgs.linux_4_2 test-patch;
+               else mkKernel pkgs.linux_4_3 test-patch;
 
     ## -- grsecurity configuration ---------------------------------------------
 
diff --git a/pkgs/os-specific/linux/kernel/patches.nix b/pkgs/os-specific/linux/kernel/patches.nix
index 93b11ed892ba..c74c4c5a944b 100644
--- a/pkgs/os-specific/linux/kernel/patches.nix
+++ b/pkgs/os-specific/linux/kernel/patches.nix
@@ -87,10 +87,10 @@ rec {
     };
 
   grsecurity_unstable = grsecPatch
-    { kversion  = "4.2.3";
-      revision  = "201510130858";
+    { kversion  = "4.3.3";
+      revision  = "201601051958";
       branch    = "test";
-      sha256    = "0ndzcx9i94c065dlyvgykmin5bfkbydrv0kxxq52a4c9is6nlsrb";
+      sha256    = "0hdf9fp5kyd9g8p3qp76jwqvqf561k61wynsq7q9aabvy0p1s18k";
     };
 
   grsec_fix_path =