diff --git a/Jenkinsfile b/Jenkinsfile
index 4f6504f3a..80db9b344 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -29,7 +29,7 @@ node {
             variable: 'PROPS_FILE')
         ]) {
             def props = readProperties file: PROPS_FILE
-            props.each {key, value -> env.put(key, value) }
+            props.each {key, value -> env."${key}" = value }
             props.each {key, value -> echo "${key}: ${value}" }
         }
 
@@ -39,7 +39,7 @@ node {
                 variable: 'BRANCH_PROPS_FILE')
             ]) {
                 def props = readProperties file: BRANCH_PROPS_FILE
-                props.each {key, value -> env.put(key, value) }
+                props.each {key, value -> env."${key}" = value }
                 props.each {key, value -> echo "${key}: ${value}" }
             }
         }