diff --git a/leshan-server-cf/src/main/java/org/eclipse/leshan/server/californium/impl/InMemoryRegistrationStore.java b/leshan-server-cf/src/main/java/org/eclipse/leshan/server/californium/impl/InMemoryRegistrationStore.java
index 78c39f042e..31ad93d8bd 100644
--- a/leshan-server-cf/src/main/java/org/eclipse/leshan/server/californium/impl/InMemoryRegistrationStore.java
+++ b/leshan-server-cf/src/main/java/org/eclipse/leshan/server/californium/impl/InMemoryRegistrationStore.java
@@ -504,4 +504,9 @@ protected <K, V> boolean removeFromMap(Map<K, V> map, K key, V value) {
         } else
             return false;
     }
+
+    @Override
+    public void setExecutor(ScheduledExecutorService executor) {
+        // TODO we could reuse californium executor ?
+    }
 }
diff --git a/leshan-server-cluster/src/main/java/org/eclipse/leshan/server/cluster/RedisRegistrationStore.java b/leshan-server-cluster/src/main/java/org/eclipse/leshan/server/cluster/RedisRegistrationStore.java
index 1c197071af..77aaa8bc86 100644
--- a/leshan-server-cluster/src/main/java/org/eclipse/leshan/server/cluster/RedisRegistrationStore.java
+++ b/leshan-server-cluster/src/main/java/org/eclipse/leshan/server/cluster/RedisRegistrationStore.java
@@ -743,4 +743,9 @@ public void run() {
     public void setExpirationListener(ExpirationListener listener) {
         expirationListener = listener;
     }
+
+    @Override
+    public void setExecutor(ScheduledExecutorService executor) {
+        // TODO we could reuse californium executor ?
+    }
 }
diff --git a/pom.xml b/pom.xml
index 4a60709bbb..6d7ca39e79 100644
--- a/pom.xml
+++ b/pom.xml
@@ -108,7 +108,7 @@ Contributors:
         <test.exclusion.pattern>**/Redis*.java</test.exclusion.pattern>
 
         <!-- dependencies version -->
-        <californium.version>2.0.0-M15</californium.version>
+        <californium.version>2.0.0-M16</californium.version>
         <logback.version>1.2.3</logback.version>
         <slf4j.api.version>1.7.25</slf4j.api.version>
         <jetty.version>9.1.4.v20140401</jetty.version>