diff --git a/main/zfs-grsec/APKBUILD b/main/zfs-grsec/APKBUILD
index 6e7dc82871f..8406a9f03dd 100644
--- a/main/zfs-grsec/APKBUILD
+++ b/main/zfs-grsec/APKBUILD
@@ -6,7 +6,7 @@ _realname=zfs
 _name=$_realname-$_flavor
 
 _kpkg=linux-$_flavor
-_kver=4.9.20
+_kver=4.9.21
 _kpkgrel=0
 
 _realver=0.6.5.9