diff --git a/pulsar-client/src/main/java/org/apache/pulsar/client/impl/conf/ProducerConfigurationData.java b/pulsar-client/src/main/java/org/apache/pulsar/client/impl/conf/ProducerConfigurationData.java
index cad68c8325d07..581b3d8a1635e 100644
--- a/pulsar-client/src/main/java/org/apache/pulsar/client/impl/conf/ProducerConfigurationData.java
+++ b/pulsar-client/src/main/java/org/apache/pulsar/client/impl/conf/ProducerConfigurationData.java
@@ -176,7 +176,6 @@ public class ProducerConfigurationData implements Serializable, Cloneable {
     @JsonIgnore
     private transient MessageCrypto messageCrypto = null;
 
-    @JsonIgnore
     private Set<String> encryptionKeys = new TreeSet<>();
 
     @ApiModelProperty(