diff --git a/backup_repo.sh b/backup_repo.sh
index 7a7459b..368af59 100755
--- a/backup_repo.sh
+++ b/backup_repo.sh
@@ -28,5 +28,5 @@ zipfile="${codecommitrepo}_backup_${dt}_UTC.tar.gz"
 echo "Compressing repository: ${codecommitrepo} into file: ${zipfile} and uploading to S3 bucket: ${backup_s3_bucket}/${codecommitrepo}"
 
 tar -zcvf "${zipfile}" "${codecommitrepo}/"
-aws s3 cp "${zipfile}" "s3://${backup_s3_bucket}/${codecommitrepo}/${zipfile}" --region $AWS_DEFAULT_REGION
+aws s3 cp "${zipfile}" "s3://${backup_s3_bucket}/${codecommitrepo}/${zipfile}" --region "$AWS_DEFAULT_REGION"
 
diff --git a/codecommit_backup_cfn_template.yaml b/codecommit_backup_cfn_template.yaml
index e165fd3..2d6cbf1 100644
--- a/codecommit_backup_cfn_template.yaml
+++ b/codecommit_backup_cfn_template.yaml
@@ -59,7 +59,7 @@ Resources:
     Properties:
       FunctionName: CodeCommitBackupLambda
       Handler: codecommit_backup_trigger_lambda.handler
-      Runtime: python3.6
+      Runtime: python3.9
       MemorySize: 128
       Timeout: 30
       Role: !GetAtt CodeCommitBackupLambdaRole.Arn
@@ -160,7 +160,7 @@ Resources:
       Environment:
         Type: LINUX_CONTAINER
         ComputeType: BUILD_GENERAL1_MEDIUM
-        Image: aws/codebuild/python:3.5.2
+        Image: aws/codebuild/standard:6.0-23.02.16
         EnvironmentVariables: 
           - 
             Name: CodeCommitBackupsS3Bucket
diff --git a/codecommit_backup_trigger_lambda.py b/codecommit_backup_trigger_lambda.py
index 98a8115..a055d8f 100644
--- a/codecommit_backup_trigger_lambda.py
+++ b/codecommit_backup_trigger_lambda.py
@@ -2,9 +2,15 @@
 # SPDX-License-Identifier: MIT-0
 
 import boto3
-client = boto3.client('codebuild')
-def handler(event, context): 
-    response = client.start_build(projectName='CodeCommitBackup')
-    output = "Triggered CodeBuild project: 'CodeCommitBackup' to back all CodeCommit repos in this account/region. Status={}".format(response["build"]["buildStatus"])
+
+client = boto3.client("codebuild")
+
+
+def handler(event, context):
+    response = client.start_build(projectName="CodeCommitBackup")
+    output = (
+        "Triggered CodeBuild project: 'CodeCommitBackup' to back"
+        " all CodeCommit repos in this account/region. Status={}"
+    ).format(response["build"]["buildStatus"])
     print(output)
     return output
diff --git a/deploy.sh b/deploy.sh
index 973a307..fe45672 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -13,7 +13,6 @@ stack_name="codecommit-backups"
 
 # You can also change these parameters but it's not required
 cfn_template="codecommit_backup_cfn_template.yaml"
-cfn_parameters="codecommit_backup_cfn_parameters.json"
 zipfile="codecommit_backup_scripts.zip"
 cfn_gen_template="/tmp/gen_codecommit_backup_cfn_template.yaml"