diff --git a/Jenkinsfile b/Jenkinsfile
index c3c19c4..2d76055 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,5 +1,22 @@
 pipeline {
     agent any 
+    stage('Preparation') { 
+        properties([
+            parameters([
+                string(
+                    defaultValue: 'maciejsobkowiak,
+                    description: 'Kaggle username',
+                    name: 'KAGGLE_USERNAME',
+                    trim: false
+                ),
+                password(
+                    defaultValue: '',
+                    description: 'Kaggle token taken from kaggle.json file, as described in https://github.com/Kaggle/kaggle-api#api-credentials',
+                    name: 'KAGGLE_KEY'
+                )
+            ])
+        ])
+    }
     stages {
         stage('checkout: Check out from version control') {
             steps {