diff --git a/Jenkinsfile b/Jenkinsfile
index 9bb490d..38480e1 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -101,13 +101,12 @@ spec:
     }
 
     stage('Build & push arm64 images') {
-      environment {
-        VERSIONTAG = "${VERSION}${TAG_SUFFIX}"
-      }
       steps {
         container('builder') {
           sh '''
             set -euo pipefail
+            VERSIONTAG="${VERSION}${TAG_SUFFIX}.${BUILD_NUMBER}"
+            export VERSIONTAG
             mkdir -p /root/.docker
             cp /docker-config/config.json /root/.docker/config.json