diff --git a/Jenkinsfile b/Jenkinsfile
index e18826d..a6d93f3 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -2,6 +2,11 @@ pipeline {
     agent any
 
     stages {
+    stage('build'){
+    steps{
+    sh './build.sh'
+    }
+    }
         stage('deploy'){
             steps{
 sshPublisher(publishers: [sshPublisherDesc(configName: 'Demos', transfers: [sshTransfer(cleanRemote: false, excludes: '', execCommand: '', execTimeout: 120000, flatten: false, makeEmptyDirs: false, noDefaultExcludes: false, patternSeparator: '[, ]+', remoteDirectory: 'ssh-uploads/resume', remoteDirectorySDF: false, removePrefix: '', sourceFiles: '**')], usePromotionTimestamp: false, useWorkspaceInPromotion: false, verbose: false)])
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..c85b161
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+COMMIT="$(git rev-parse HEAD)"
+sed -i "s/css?=\w*/css?=${COMMIT}/g" index.html
diff --git a/index.html b/index.html
index 6d9b921..c75f76a 100644
--- a/index.html
+++ b/index.html
@@ -6,8 +6,8 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
   <meta http-equiv="X-UA-Compatible" content="ie=edge" />
   <title>Andrzej Stepien : Coder for Hire</title>
-  <link rel="stylesheet" href="css/defaults.css?v=3" />
-  <link rel="stylesheet" href="css/styles.css?v=3" />
+  <link rel="stylesheet" href="css/defaults.css?=79965b392eb4247ada3eaed20a8d12e6f8c34337" />
+  <link rel="stylesheet" href="css/styles.css?=79965b392eb4247ada3eaed20a8d12e6f8c34337" />
 
   <!-- Twitter card meta -->
   <meta name="twitter:card" content="summary_large_image" />