diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index e59fa59..8639b54
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
     <!-- Web dependencies -->
-    <webjars-bootstrap.version>3.3.6</webjars-bootstrap.version>
+    <webjars-bootstrap.version>4.0.0</webjars-bootstrap.version>
     <webjars-jquery-ui.version>1.11.4</webjars-jquery-ui.version>
     <webjars-jquery.version>2.2.4</webjars-jquery.version>
     <wro4j.version>1.8.0</wro4j.version>