diff --git a/Jenkinsfile b/Jenkinsfile
index eb5d2e1..254b826 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -125,7 +125,9 @@ pipeline {
                         mavenOpts: '-Djavax.net.ssl.trustStore=/etc/ssl/certs/java/cacerts' //Work around for JDK9 missing cacerts
                 ) {
                     sh "mvn -P windows,linux,osx,wintab,release versions:set -DremoveSnapshot"
-                    VERSION_TAG = sh(script: "mvn -Dexpression=project.version help:evaluate | grep -e '^[[:digit:]]'", returnStdout: true).trim()
+                    script {
+                        VERSION_TAG = sh(script: "mvn -Dexpression=project.version help:evaluate | grep -e '^[[:digit:]]'", returnStdout: true).trim()
+                    }
                     sh "git tag -a ${VERSION_TAG} -m 'Release tag ${VERSION_TAG}'"
                     sh "mvn -P windows,linux,osx,wintab -Dmaven.antrun.skip -Dmaven.test.skip -DskipTests -DskipITs deploy"
                     sh "mvn -P windows,linux,osx,wintab,release versions:set -DnextSnapshot"