diff --git a/linux-arm64-full/Dockerfile.in b/linux-arm64-full/Dockerfile.in
index 665b78b..62295e6 100644
--- a/linux-arm64-full/Dockerfile.in
+++ b/linux-arm64-full/Dockerfile.in
@@ -3,7 +3,8 @@ FROM dockcross/base:latest
 # This is for 64-bit ARM Linux machine
 
 # Buildroot version
-ENV BR_VERSION 2021.08-rc2
+# crosstool-ng master 2021-08-20
+ENV BR_VERSION dbe3af5532bfc2ecceca5ea2a4604a82021a8748
 
 #include "common.buildroot"
 
diff --git a/linux-arm64-full/buildroot.config b/linux-arm64-full/buildroot.config
index bcbe55f..df5f4aa 100644
--- a/linux-arm64-full/buildroot.config
+++ b/linux-arm64-full/buildroot.config
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Buildroot 2021.08-rc1-63-gf4961dea50 Configuration
+# Buildroot 2021.08-rc2-29-gdbe3af5532 Configuration
 #
 BR2_HAVE_DOT_CONFIG=y
 BR2_HOST_GCC_AT_LEAST_4_9=y
@@ -223,7 +223,7 @@ BR2_KERNEL_HEADERS_5_13=y
 # BR2_KERNEL_HEADERS_CUSTOM_TARBALL is not set
 # BR2_KERNEL_HEADERS_CUSTOM_GIT is not set
 BR2_KERNEL_HEADERS_LATEST=y
-BR2_DEFAULT_KERNEL_HEADERS="5.13.2"
+BR2_DEFAULT_KERNEL_HEADERS="5.13.9"
 BR2_PACKAGE_LINUX_HEADERS=y
 
 #
@@ -1479,7 +1479,6 @@ BR2_PACKAGE_LIBGPG_ERROR_SYSCFG="aarch64-unknown-linux-gnu"
 # BR2_PACKAGE_LIBGPGME is not set
 # BR2_PACKAGE_LIBKCAPI is not set
 # BR2_PACKAGE_LIBKSBA is not set
-# BR2_PACKAGE_LIBMCRYPT is not set
 # BR2_PACKAGE_LIBMHASH is not set
 # BR2_PACKAGE_LIBNSS is not set
 # BR2_PACKAGE_LIBOLM is not set
@@ -2368,7 +2367,6 @@ BR2_PACKAGE_BITCOIN_ARCH_SUPPORTS=y
 # BR2_PACKAGE_GSETTINGS_DESKTOP_SCHEMAS is not set
 # BR2_PACKAGE_HAVEGED is not set
 # BR2_PACKAGE_LINUX_SYSCALL_SUPPORT is not set
-# BR2_PACKAGE_MCRYPT is not set
 # BR2_PACKAGE_MOBILE_BROADBAND_PROVIDER_INFO is not set
 # BR2_PACKAGE_NETDATA is not set
 # BR2_PACKAGE_PROJ is not set
@@ -2533,7 +2531,7 @@ BR2_PACKAGE_MONGREL2_LIBC_SUPPORTS=y
 # BR2_PACKAGE_NETSTAT_NAT is not set
 
 #
-# NetworkManager needs udev /dev management and a glibc toolchain w/ headers >= 3.2, dynamic library, wchar, threads, gcc >= 4.9
+# NetworkManager needs udev /dev management and a glibc toolchain w/ headers >= 4.6, dynamic library, wchar, threads, gcc >= 4.9
 #
 # BR2_PACKAGE_NFACCT is not set
 # BR2_PACKAGE_NFTABLES is not set
@@ -2841,7 +2839,7 @@ BR2_PACKAGE_EFIVAR_ARCH_SUPPORTS=y
 BR2_PACKAGE_LIBVIRT_ARCH_SUPPORTS=y
 
 #
-# libvirt needs udev /dev management, a toolchain w/ threads, dynamic library, kernel headers >= 3.12
+# libvirt needs udev /dev management, a toolchain w/ threads, dynamic library, kernel headers >= 3.12 (4.11 for AArch64)
 #
 # BR2_PACKAGE_LXC is not set
 BR2_PACKAGE_MAKEDUMPFILE_ARCH_SUPPORTS=y
@@ -3108,7 +3106,6 @@ BR2_PACKAGE_HOST_RUSTC_ARCH="aarch64"
 BR2_PACKAGE_PROVIDES_HOST_RUSTC="host-rust-bin"
 # BR2_PACKAGE_HOST_SAM_BA is not set
 # BR2_PACKAGE_HOST_SDBUSPLUS is not set
-# BR2_PACKAGE_HOST_SENTRY_CLI is not set
 # BR2_PACKAGE_HOST_SQUASHFS is not set
 # BR2_PACKAGE_HOST_SWIG is not set
 # BR2_PACKAGE_HOST_UBOOT_TOOLS is not set
@@ -3126,6 +3123,8 @@ BR2_PACKAGE_PROVIDES_HOST_RUSTC="host-rust-bin"
 #
 # Legacy options removed in 2021.08
 #
+# BR2_PACKAGE_LIBMCRYPT is not set
+# BR2_PACKAGE_MCRYPT is not set
 # BR2_PACKAGE_PHP_EXT_MCRYPT is not set
 # BR2_BINUTILS_VERSION_2_34_X is not set
 # BR2_PACKAGE_LIBSOIL is not set