diff --git a/browser_patches/checkout_build_archive_upload.sh b/browser_patches/checkout_build_archive_upload.sh
index 108654575b..04c581c3d5 100755
--- a/browser_patches/checkout_build_archive_upload.sh
+++ b/browser_patches/checkout_build_archive_upload.sh
@@ -21,6 +21,7 @@ if [[ $# == 0 ]]; then
   exit 1
 fi
 
+CURRENT_ARCH="$(uname -m)"
 CURRENT_HOST_OS="$(uname)"
 CURRENT_HOST_OS_VERSION=""
 if [[ "$CURRENT_HOST_OS" == "Darwin" ]]; then
@@ -36,6 +37,7 @@ BUILD_FLAVOR="$1"
 BUILD_BLOB_NAME=""
 EXPECTED_HOST_OS=""
 EXPECTED_HOST_OS_VERSION=""
+EXPECTED_ARCH="x86_64"
 if [[ "$BUILD_FLAVOR" == "winldd-win64" ]]; then
   BROWSER_NAME="winldd"
   EXPECTED_HOST_OS="MINGW"
@@ -138,11 +140,24 @@ elif [[ "$BUILD_FLAVOR" == "webkit-mac-11.0" ]]; then
   EXPECTED_HOST_OS="Darwin"
   EXPECTED_HOST_OS_VERSION="11.0"
   BUILD_BLOB_NAME="webkit-mac-11.0.zip"
+elif [[ "$BUILD_FLAVOR" == "webkit-mac-11.0-arm64" ]]; then
+  BROWSER_NAME="webkit"
+  EXPECTED_HOST_OS="Darwin"
+  EXPECTED_HOST_OS_VERSION="11.0"
+  EXPECTED_ARCH="arm64"
+  BUILD_BLOB_NAME="webkit-mac-11.0-arm64.zip"
 else
   echo ERROR: unknown build flavor - "$BUILD_FLAVOR"
   exit 1
 fi
 
+if [[ "$CURRENT_ARCH" != "$EXPECTED_ARCH" ]]; then
+  echo "ERROR: cannot build $BUILD_FLAVOR"
+  echo "  -- expected arch: $EXPECTED_ARCH"
+  echo "  --  current arch: $CURRENT_ARCH"
+  exit 1
+fi
+
 if [[ "$CURRENT_HOST_OS" != $EXPECTED_HOST_OS* ]]; then
   echo "ERROR: cannot build $BUILD_FLAVOR"
   echo "  -- expected OS: $EXPECTED_HOST_OS"
diff --git a/browser_patches/tools/check_cdn.sh b/browser_patches/tools/check_cdn.sh
index 82dd78fac3..623615cb2f 100755
--- a/browser_patches/tools/check_cdn.sh
+++ b/browser_patches/tools/check_cdn.sh
@@ -41,6 +41,7 @@ WK_ARCHIVES=(
   "$HOST/webkit/%s/webkit-ubuntu-20.04.zip"
   "$HOST/webkit/%s/webkit-mac-10.14.zip"
   "$HOST/webkit/%s/webkit-mac-10.15.zip"
+  "$HOST/webkit/%s/webkit-mac-11.0-arm64.zip"
   "$HOST/webkit/%s/webkit-win64.zip"
 )
 WK_ALIASES=(
@@ -48,6 +49,7 @@ WK_ALIASES=(
   "WK-UBUNTU-20.04"
   "WK-MAC-10.14"
   "WK-MAC-10.15"
+  "WK-MAC-11.0-ARM64"
   "WK-WIN64"
 )
 
diff --git a/browser_patches/webkit/BUILD_NUMBER b/browser_patches/webkit/BUILD_NUMBER
index 7fb12bb45c..96ec39ef8b 100644
--- a/browser_patches/webkit/BUILD_NUMBER
+++ b/browser_patches/webkit/BUILD_NUMBER
@@ -1,2 +1,2 @@
-1401
-Changed: aslushnikov@gmail.com Tue Dec  8 12:36:33 CST 2020
+1402
+Changed: aslushnikov@gmail.com Tue Dec  8 18:35:08 CST 2020