diff --git a/Jenkinsfile b/Jenkinsfile
index 7effab9..4e75cd7 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -11,18 +11,18 @@ pipeline {
         IMAGE_REPO = 'veenm'          // Naam van de Docker-image
         IMAGE_NAME = 'jobfindr-jvm'          // Naam van de Docker-image
         IMAGE_TAG = 'latest'
-        MAILER_FROM='MAILER_FROM'
-        MAILER_HOST='MAILER_HOST'
-        MAILER_PORT='MAILER_PORT'
-        MAILER_USERNAME='MAILER_USERNAME'
-        MAILER_PASSWORD='MAILER_PASSWORD'
+        MAILER_FROM= credentials('MAILER_FROM')
+        MAILER_HOST= credentials('MAILER_HOST')
+        MAILER_PORT= credentials('MAILER_PORT')
+        MAILER_USERNAME= credentials('MAILER_USERNAME')
+        MAILER_PASSWORD= credentials('MAILER_PASSWORD')
 
-        DB_HOST='DB_HOST'
-        DB_PORT='DB_PORT'
-        DB_USERNAME='DB_USERNAME'
-        DB_PASSWORD='DB_PASSWORD'
+        DB_HOST= credentials('DB_HOST')
+        DB_PORT= credentials('DB_PORT')
+        DB_USERNAME= credentials('DB_USERNAME')
+        DB_PASSWORD= credentials('DB_PASSWORD')
 
-        CORS_ORIGINS='CORS_ORIGINS'
+        CORS_ORIGINS= credentials('CORS_ORIGINS')
     }
 
     stages {