diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dcdaa06caa2..eb37fe9c801 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -98,9 +98,6 @@ jobs:
       - name: show the current environment
         run: src/ci/scripts/dump-environment.sh
         if: success() && !env.SKIP_JOB
-      - name: install awscli
-        run: src/ci/scripts/install-awscli.sh
-        if: success() && !env.SKIP_JOB
       - name: install sccache
         run: src/ci/scripts/install-sccache.sh
         if: success() && !env.SKIP_JOB
@@ -170,6 +167,7 @@ jobs:
       TOOLSTATE_PUBLISH: 1
       CACHES_AWS_ACCESS_KEY_ID: AKIA46X5W6CZI5DHEBFL
       ARTIFACTS_AWS_ACCESS_KEY_ID: AKIA46X5W6CZN24CBO55
+      AWS_REGION: us-west-1
       CACHE_DOMAIN: ci-caches.rust-lang.org
     if: "github.event_name == 'push' && github.ref == 'refs/heads/auto' && github.repository == 'rust-lang-ci/rust'"
     strategy:
@@ -521,9 +519,6 @@ jobs:
       - name: show the current environment
         run: src/ci/scripts/dump-environment.sh
         if: success() && !env.SKIP_JOB
-      - name: install awscli
-        run: src/ci/scripts/install-awscli.sh
-        if: success() && !env.SKIP_JOB
       - name: install sccache
         run: src/ci/scripts/install-sccache.sh
         if: success() && !env.SKIP_JOB
@@ -593,6 +588,7 @@ jobs:
       TOOLSTATE_PUBLISH: 1
       CACHES_AWS_ACCESS_KEY_ID: AKIA46X5W6CZI5DHEBFL
       ARTIFACTS_AWS_ACCESS_KEY_ID: AKIA46X5W6CZN24CBO55
+      AWS_REGION: us-west-1
       CACHE_DOMAIN: ci-caches.rust-lang.org
     if: "github.event_name == 'push' && (github.ref == 'refs/heads/try' || github.ref == 'refs/heads/try-perf') && github.repository == 'rust-lang-ci/rust'"
     strategy:
@@ -637,9 +633,6 @@ jobs:
       - name: show the current environment
         run: src/ci/scripts/dump-environment.sh
         if: success() && !env.SKIP_JOB
-      - name: install awscli
-        run: src/ci/scripts/install-awscli.sh
-        if: success() && !env.SKIP_JOB
       - name: install sccache
         run: src/ci/scripts/install-sccache.sh
         if: success() && !env.SKIP_JOB
@@ -706,6 +699,7 @@ jobs:
       TOOLSTATE_PUBLISH: 1
       CACHES_AWS_ACCESS_KEY_ID: AKIA46X5W6CZI5DHEBFL
       ARTIFACTS_AWS_ACCESS_KEY_ID: AKIA46X5W6CZN24CBO55
+      AWS_REGION: us-west-1
       CACHE_DOMAIN: ci-caches.rust-lang.org
     if: "github.event_name == 'push' && github.ref == 'refs/heads/master' && github.repository == 'rust-lang-ci/rust'"
     steps:
diff --git a/src/ci/docker/run.sh b/src/ci/docker/run.sh
index 69d4916e5a9..8bea8cd4c87 100755
--- a/src/ci/docker/run.sh
+++ b/src/ci/docker/run.sh
@@ -169,6 +169,7 @@ if [ "$SCCACHE_BUCKET" != "" ]; then
     args="$args --env SCCACHE_REGION"
     args="$args --env AWS_ACCESS_KEY_ID"
     args="$args --env AWS_SECRET_ACCESS_KEY"
+    args="$args --env AWS_REGION"
 else
     mkdir -p $HOME/.cache/sccache
     args="$args --env SCCACHE_DIR=/sccache --volume $HOME/.cache/sccache:/sccache"
diff --git a/src/ci/github-actions/ci.yml b/src/ci/github-actions/ci.yml
index 5661adf6776..7f2d34f8098 100644
--- a/src/ci/github-actions/ci.yml
+++ b/src/ci/github-actions/ci.yml
@@ -53,6 +53,7 @@ x--expand-yaml-anchors--remove:
     # (caches, artifacts...).
     CACHES_AWS_ACCESS_KEY_ID: AKIA46X5W6CZI5DHEBFL
     ARTIFACTS_AWS_ACCESS_KEY_ID: AKIA46X5W6CZN24CBO55
+    AWS_REGION: us-west-1
     CACHE_DOMAIN: ci-caches.rust-lang.org
 
   - &dummy-variables
@@ -68,6 +69,7 @@ x--expand-yaml-anchors--remove:
     # (caches, artifacts...).
     CACHES_AWS_ACCESS_KEY_ID: AKIA46X5W6CZOMUQATD5
     ARTIFACTS_AWS_ACCESS_KEY_ID: AKIA46X5W6CZH5AYXDVF
+    AWS_REGION: us-west-1
     CACHE_DOMAIN: ci-caches-gha.rust-lang.org
 
   - &base-job
@@ -158,10 +160,6 @@ x--expand-yaml-anchors--remove:
         run: src/ci/scripts/dump-environment.sh
         <<: *step
 
-      - name: install awscli
-        run: src/ci/scripts/install-awscli.sh
-        <<: *step
-
       - name: install sccache
         run: src/ci/scripts/install-sccache.sh
         <<: *step
diff --git a/src/ci/scripts/install-awscli.sh b/src/ci/scripts/install-awscli.sh
deleted file mode 100755
index aa62407eaea..00000000000
--- a/src/ci/scripts/install-awscli.sh
+++ /dev/null
@@ -1,38 +0,0 @@
-#!/bin/bash
-# This script downloads and installs awscli from the packages mirrored in our
-# own S3 bucket. This follows the recommendations at:
-#
-#    https://packaging.python.org/guides/index-mirrors-and-caches/#caching-with-pip
-#
-# To create a new mirrored copy you can run the command:
-#
-#    pip wheel awscli
-#
-# Before compressing please make sure all the wheels end with `-none-any.whl`.
-# If that's not the case you'll need to remove the non-cross-platform ones and
-# replace them with the .tar.gz downloaded from https://pypi.org.
-
-set -euo pipefail
-IFS=$'\n\t'
-
-source "$(cd "$(dirname "$0")" && pwd)/../shared.sh"
-
-MIRROR="${MIRRORS_BASE}/2023-04-28-awscli.tar"
-DEPS_DIR="/tmp/awscli-deps"
-
-pip="pip"
-pipflags=""
-if isLinux; then
-    pip="pip3"
-    pipflags="--user"
-
-    sudo apt-get install -y python3-setuptools python3-wheel
-    ciCommandAddPath "${HOME}/.local/bin"
-elif isMacOS; then
-    pip="pip3"
-fi
-
-mkdir -p "${DEPS_DIR}"
-curl "${MIRROR}" | tar xf - -C "${DEPS_DIR}"
-"${pip}" install ${pipflags} --no-index "--find-links=${DEPS_DIR}" awscli
-rm -rf "${DEPS_DIR}"