diff --git a/pom.xml b/pom.xml
index eac7903dd7..062a69746c 100755
--- a/pom.xml
+++ b/pom.xml
@@ -829,6 +829,7 @@
                             <exclude>src/main/scripts/control/**</exclude>
                             <exclude>src/main/scripts/windows/**</exclude>
                             <exclude>src/main/resources/public/static/rulenode/**</exclude>
+                            <exclude>src/main/java/org/eclipse/leshan/server/observation//**</exclude>
                             <exclude>**/*.proto.js</exclude>
                             <exclude>docker/haproxy/**</exclude>
                             <exclude>docker/tb-node/**</exclude>