diff --git a/tools/sdks/README b/tools/sdks/README
index 0ef9f68..0f4ce9a 100644
--- a/tools/sdks/README
+++ b/tools/sdks/README
@@ -6,7 +6,9 @@
 We use the x64 build as the default on Linux, Mac and Windows. Builds for Linux
 on ARM and ARM64 are also provided.
 
-To upload new versions of these CIPD packages, run "./update.sh" in this
-directory. Because these SDKs are used for the presubmit dart format check on
-changed files, they may need to be updated often when dart format is changing
-rapidly. Access to the project-dart-admins Luci auth group is required to do so.
+The SDK can be updated to a release commit from dev/beta/stable using:
+
+    gclient setdep --var="sdk_tag=git_revision:$commit"
+
+Because these SDKs are used for the presubmit dart format check on changed
+files, they may need to be updated often when dart format is changing rapidly.
diff --git a/tools/sdks/update.sh b/tools/sdks/update.sh
deleted file mode 100755
index 82af17d..0000000
--- a/tools/sdks/update.sh
+++ /dev/null
@@ -1,98 +0,0 @@
-#!/usr/bin/env bash
-# Uploads a new version of the checked in SDK CIPD packages
-set -e
-set -x
-
-if [ -z "$1" ]; then
-  echo "Usage: update.sh version"
-  exit 1
-fi
-
-case "$1" in
-*-*.0.dev) channel="dev";;
-*-*.*.beta) channel="beta";;
-*) channel="stable";;
-esac
-
-tmpdir=$(mktemp -d)
-cleanup() {
-  rm -rf "$tmpdir"
-}
-trap cleanup EXIT HUP INT QUIT TERM PIPE
-pushd "$tmpdir"
-
-gsutil.py cp "gs://dart-archive/channels/$channel/release/$1/sdk/dartsdk-linux-x64-release.zip" .
-unzip -q dartsdk-linux-x64-release.zip -d sdk
-cipd create \
-  -name dart/dart-sdk/linux-amd64 \
-  -in sdk \
-  -install-mode copy \
-  -tag version:$1 \
-  -ref $channel
-rm -rf sdk
-
-gsutil.py cp "gs://dart-archive/channels/$channel/release/$1/sdk/dartsdk-linux-arm-release.zip" .
-unzip -q dartsdk-linux-arm-release.zip -d sdk
-cipd create \
-  -name dart/dart-sdk/linux-arm \
-  -in sdk \
-  -install-mode copy \
-  -tag version:$1 \
-  -ref $channel
-rm -rf sdk
-
-gsutil.py cp "gs://dart-archive/channels/$channel/release/$1/sdk/dartsdk-linux-arm64-release.zip" .
-unzip -q dartsdk-linux-arm64-release.zip -d sdk
-cipd create \
-  -name dart/dart-sdk/linux-arm64 \
-  -in sdk \
-  -install-mode copy \
-  -tag version:$1 \
-  -ref $channel
-rm -rf sdk
-
-if [ "$channel" = "dev" ]; then
-  gsutil.py cp "gs://dart-archive/channels/$channel/release/$1/sdk/dartsdk-linux-riscv64-release.zip" .
-  unzip -q dartsdk-linux-riscv64-release.zip -d sdk
-  cipd create \
-    -name dart/dart-sdk/linux-riscv64 \
-    -in sdk \
-    -install-mode copy \
-    -tag version:$1 \
-    -ref $channel
-  rm -rf sdk
-fi
-
-gsutil.py cp "gs://dart-archive/channels/$channel/release/$1/sdk/dartsdk-macos-x64-release.zip" .
-unzip -q dartsdk-macos-x64-release.zip -d sdk
-cipd create \
-  -name dart/dart-sdk/mac-amd64 \
-  -in sdk \
-  -install-mode copy \
-  -tag version:$1 \
-  -ref $channel
-rm -rf sdk
-
-gsutil.py cp "gs://dart-archive/channels/$channel/release/$1/sdk/dartsdk-macos-arm64-release.zip" .
-unzip -q dartsdk-macos-arm64-release.zip -d sdk
-cipd create \
-  -name dart/dart-sdk/mac-arm64 \
-  -in sdk \
-  -install-mode copy \
-  -tag version:$1 \
-  -ref $channel
-rm -rf sdk
-
-gsutil.py cp "gs://dart-archive/channels/$channel/release/$1/sdk/dartsdk-windows-x64-release.zip" .
-unzip -q dartsdk-windows-x64-release.zip -d sdk
-cipd create \
-  -name dart/dart-sdk/windows-amd64 \
-  -in sdk \
-  -install-mode copy \
-  -tag version:$1 \
-  -ref $channel
-rm -rf sdk
-
-popd
-
-gclient setdep --var="sdk_tag=version:$1"