diff --git a/Jenkinsfile b/Jenkinsfile
index 4124e1b..d6a7d3d 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -75,9 +75,8 @@ pipeline {
         withCredentials([string(credentialsId: 'ACR_PASSWORD', variable: 'ACR_PASS')]) {
           script {
             def serviceVersions = new groovy.json.JsonSlurperClassic().parseText(env.SERVICE_VERSIONS_JSON)
-            for (entry in serviceVersions) {
-              def svc = entry.key
-              def ver = entry.value
+            for (svc in serviceVersions.keySet()) {
+              def ver = serviceVersions[svc]
               def base = "${ACR_REGISTRY}/${ACR_NAMESPACE}/${svc}"
               def versionedImage = "${base}:${ver}"
               def latestImage = "${base}:latest"
@@ -108,8 +107,7 @@ pipeline {
           withCredentials([sshUserPrivateKey(credentialsId: 'PROD_SSH_KEY', keyFileVariable: 'SSH_KEY')]) {
             script {
               def serviceVersions = new groovy.json.JsonSlurperClassic().parseText(env.SERVICE_VERSIONS_JSON)
-              for (entry in serviceVersions) {
-                def svc = entry.key
+              for (svc in serviceVersions.keySet()) {
                 def latestImage = "${ACR_REGISTRY}/${ACR_NAMESPACE}/${svc}:latest"
                 echo "Deploying ${svc}..."
                 retry(2) {