diff --git a/Jenkinsfile b/Jenkinsfile
index 3f48b47..fbea7de 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -15,13 +15,19 @@ pipeline {
     }
     stage('Authenticate & Configure') {
       steps {
-        // Use AWS Credentials Plugin to pick up your IAM user keys
-        withAWS(credentials: 'jenkins-codeartifact', region: "${AWS_REGION}") {
+        // Use AWS credentials directly with withCredentials
+        withCredentials([
+          [$class: 'AmazonWebServicesCredentialsBinding', 
+           credentialsId: 'jenkins-codeartifact', 
+           accessKeyVariable: 'AWS_ACCESS_KEY_ID', 
+           secretKeyVariable: 'AWS_SECRET_ACCESS_KEY']
+        ]) {
           script {
             // Fetch a short-lived CodeArtifact token
             env.CODEART_TOKEN = sh(
               script: """
                 aws codeartifact get-authorization-token \\
+                  --region ${AWS_REGION} \\
                   --domain ${CODEART_DOMAIN} \\
                   --domain-owner ${AWS_ACCOUNT_ID} \\
                   --query authorizationToken --output text