diff --git a/inproctester-htmlunit/pom.xml b/inproctester-htmlunit/pom.xml
index e544875..6f5af2f 100644
--- a/inproctester-htmlunit/pom.xml
+++ b/inproctester-htmlunit/pom.xml
@@ -38,7 +38,7 @@
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
 			<artifactId>log4j-core</artifactId>
-			<version>2.9.1</version>
+			<version>2.16.0</version>
 		</dependency>
 
 		<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->