diff --git a/pom.xml b/pom.xml
index 006f05bb8..a10caa34c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
     <webjars-bootstrap.version>3.3.6</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>
+    <wro4j.version>1.9.0</wro4j.version>
 
     <jacoco.version>0.8.5</jacoco.version>
     <nohttp-checkstyle.version>0.0.4.RELEASE</nohttp-checkstyle.version>