diff --git a/pom.xml b/pom.xml
index 7eb590b441368c31fcfa50106868825824bbaf24..9036f6c14579dc84e9d9a7fe9d487f026748b4eb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -97,7 +97,7 @@ THE SOFTWARE.
     <access-modifier.version>1.30</access-modifier.version>
     <antlr.version>4.11.1</antlr.version>
     <bridge-method-injector.version>1.25</bridge-method-injector.version>
-    <spotless.version>2.31.0</spotless.version>
+    <spotless.version>2.33.0</spotless.version>
     <!-- Make sure to keep the jetty-maven-plugin version in war/pom.xml in sync with the Jetty release in Winstone: -->
     <winstone.version>6.10</winstone.version>
   </properties>