require Maven 3.9.8 (available on Jenkins CI)
diff --git a/pom.xml b/pom.xml
index 84cd7b7..a4c412b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -62,7 +62,7 @@
             <configuration>
               <rules>
                 <requireMavenVersion>
-                  <version>3.9.9</version>
+                  <version>3.9.8</version>
                 </requireMavenVersion>
               </rules>
             </configuration>