diff --git a/pom.xml b/pom.xml
index 97cecef1b9..0a2f36d4d6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -121,7 +121,7 @@
         <spring-boot.version>2.7.18</spring-boot.version>
         <guice.version>4.2.3</guice.version>
         <jaxrs.api.version>2.1.6</jaxrs.api.version>
-        <htmlunit.version>4.21.0</htmlunit.version>
+        <htmlunit.version>5.1.0</htmlunit.version>
         <bouncycastle.version>1.84</bouncycastle.version>
 
         <!-- Test 3rd-party dependencies: -->