diff --git a/gumtree/pom.xml b/gumtree/pom.xml
index 32b912a..502ad1f 100644
--- a/gumtree/pom.xml
+++ b/gumtree/pom.xml
@@ -53,7 +53,7 @@
                     <dependency>
                         <groupId>com.puppycrawl.tools</groupId>
                         <artifactId>checkstyle</artifactId>
-                        <version>6.7</version>
+                        <version>8.29</version>
                     </dependency>
                 </dependencies>
                 <configuration>