diff --git a/experiments/Rats!/java/input/antlr4/tool/pom.xml b/experiments/Rats!/java/input/antlr4/tool/pom.xml
index ba38bcd7..0d4935ab 100644
--- a/experiments/Rats!/java/input/antlr4/tool/pom.xml
+++ b/experiments/Rats!/java/input/antlr4/tool/pom.xml
@@ -25,7 +25,7 @@
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-server</artifactId>
-      <version>9.4.17.v20190418</version>
+      <version>9.4.51.v20230217</version>
       <scope>test</scope>
     </dependency>
     <dependency>