diff --git a/README.md b/README.md
index ecd0d31..aa3a11a 100644
--- a/README.md
+++ b/README.md
@@ -31,15 +31,22 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
+    
+    - name: Configure AWS Credentials
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: ${{ secrets.AWS_REGION }}
+          role-to-assume: ${{ secrets.AWS_ASSUMED_ROLE }}
+          
     - uses: jakejarvis/s3-sync-action@master
       with:
         args: --acl public-read --follow-symlinks --delete
       env:
         AWS_S3_BUCKET: ${{ secrets.AWS_S3_BUCKET }}
-        AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-        AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-        AWS_REGION: 'us-west-1'   # optional: defaults to us-east-1
-        SOURCE_DIR: 'public'      # optional: defaults to entire repository
+        AWS_REGION: ${{ secrets.AWS_REGION }}             # optional: defaults to us-east-1
+        SOURCE_DIR: 'public'                              # optional: defaults to entire repository
 ```
 
 
@@ -49,8 +56,6 @@ The following settings must be passed as environment variables as shown in the e
 
 | Key | Value | Suggested Type | Required | Default |
 | ------------- | ------------- | ------------- | ------------- | ------------- |
-| `AWS_ACCESS_KEY_ID` | Your AWS Access Key. [More info here.](https://docs.aws.amazon.com/general/latest/gr/managing-aws-access-keys.html) | `secret env` | **Yes** | N/A |
-| `AWS_SECRET_ACCESS_KEY` | Your AWS Secret Access Key. [More info here.](https://docs.aws.amazon.com/general/latest/gr/managing-aws-access-keys.html) | `secret env` | **Yes** | N/A |
 | `AWS_S3_BUCKET` | The name of the bucket you're syncing to. For example, `jarv.is` or `my-app-releases`. | `secret env` | **Yes** | N/A |
 | `AWS_REGION` | The region where you created your bucket. Set to `us-east-1` by default. [Full list of regions here.](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html#concepts-available-regions) | `env` | No | `us-east-1` |
 | `AWS_S3_ENDPOINT` | The endpoint URL of the bucket you're syncing to. Can be used for [VPC scenarios](https://aws.amazon.com/blogs/aws/new-vpc-endpoint-for-amazon-s3/) or for non-AWS services using the S3 API, like [DigitalOcean Spaces](https://www.digitalocean.com/community/tools/adapting-an-existing-aws-s3-application-to-digitalocean-spaces). | `env` | No | Automatic (`s3.amazonaws.com` or AWS's region-specific equivalent) |
diff --git a/entrypoint.sh b/entrypoint.sh
index 466e69c..1083fe2 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -7,16 +7,6 @@ if [ -z "$AWS_S3_BUCKET" ]; then
   exit 1
 fi
 
-if [ -z "$AWS_ACCESS_KEY_ID" ]; then
-  echo "AWS_ACCESS_KEY_ID is not set. Quitting."
-  exit 1
-fi
-
-if [ -z "$AWS_SECRET_ACCESS_KEY" ]; then
-  echo "AWS_SECRET_ACCESS_KEY is not set. Quitting."
-  exit 1
-fi
-
 # Default to us-east-1 if AWS_REGION not set.
 if [ -z "$AWS_REGION" ]; then
   AWS_REGION="us-east-1"
@@ -27,30 +17,8 @@ if [ -n "$AWS_S3_ENDPOINT" ]; then
   ENDPOINT_APPEND="--endpoint-url $AWS_S3_ENDPOINT"
 fi
 
-# Create a dedicated profile for this action to avoid conflicts
-# with past/future actions.
-# https://github.com/jakejarvis/s3-sync-action/issues/1
-aws configure --profile s3-sync-action <<-EOF > /dev/null 2>&1
-${AWS_ACCESS_KEY_ID}
-${AWS_SECRET_ACCESS_KEY}
-${AWS_REGION}
-text
-EOF
-
 # Sync using our dedicated profile and suppress verbose messages.
 # All other flags are optional via the `args:` directive.
 sh -c "aws s3 sync ${SOURCE_DIR:-.} s3://${AWS_S3_BUCKET}/${DEST_DIR} \
-              --profile s3-sync-action \
               --no-progress \
               ${ENDPOINT_APPEND} $*"
-
-# Clear out credentials after we're done.
-# We need to re-run `aws configure` with bogus input instead of
-# deleting ~/.aws in case there are other credentials living there.
-# https://forums.aws.amazon.com/thread.jspa?threadID=148833
-aws configure --profile s3-sync-action <<-EOF > /dev/null 2>&1
-null
-null
-null
-text
-EOF