diff --git a/openpdf-html/pom.xml b/openpdf-html/pom.xml
index 6c7f43f21..1e6561b4f 100644
--- a/openpdf-html/pom.xml
+++ b/openpdf-html/pom.xml
@@ -30,7 +30,7 @@
     <dependency>
       <groupId>org.htmlunit</groupId>
       <artifactId>neko-htmlunit</artifactId>
-      <version>4.21.0</version>
+      <version>5.1.0</version>
     </dependency>
     <dependency>
       <groupId>com.github.librepdf</groupId>