diff --git a/core/src/main/java/org/genesys/blocks/model/AuditedVersionedModel.java b/core/src/main/java/org/genesys/blocks/model/AuditedVersionedModel.java
index e5420def2cdede5b1238103231f0cfdd5f5500fb..bf038573a69bc97b99fe01152fb4c227560271c0 100644
--- a/core/src/main/java/org/genesys/blocks/model/AuditedVersionedModel.java
+++ b/core/src/main/java/org/genesys/blocks/model/AuditedVersionedModel.java
@@ -29,6 +29,8 @@ import org.springframework.data.elasticsearch.annotations.Field;
 import org.springframework.data.elasticsearch.annotations.FieldIndex;
 
 import com.fasterxml.jackson.annotation.JsonView;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonProperty.Access;
 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 
 /**
@@ -46,6 +48,7 @@ public abstract class AuditedVersionedModel extends VersionedModel {
 	@Column(updatable = false)
 	@JsonSerialize(converter = JsonSidConverter.class)
 	@Field(index = FieldIndex.no)
+	@JsonProperty(access = Access.READ_ONLY)
 	private Long createdBy;
 
 	/** The created date. */
@@ -59,6 +62,7 @@ public abstract class AuditedVersionedModel extends VersionedModel {
 	@LastModifiedBy
 	@JsonSerialize(converter = JsonSidConverter.class)
 	@Field(index = FieldIndex.no)
+	@JsonProperty(access = Access.READ_ONLY)
 	private Long lastModifiedBy;
 
 	/** The last modified date. */
diff --git a/core/src/main/java/org/genesys/blocks/model/AuditedVersionedModelWithoutId.java b/core/src/main/java/org/genesys/blocks/model/AuditedVersionedModelWithoutId.java
index 894c4c34c15d8b876c8a4c1528806c2dd83a6c9f..6a359329e54ba569acc1792e59a043e4a10b5f32 100644
--- a/core/src/main/java/org/genesys/blocks/model/AuditedVersionedModelWithoutId.java
+++ b/core/src/main/java/org/genesys/blocks/model/AuditedVersionedModelWithoutId.java
@@ -20,7 +20,9 @@ import java.util.Date;
 import javax.persistence.Column;
 import javax.persistence.MappedSuperclass;
 
+import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonView;
+import com.fasterxml.jackson.annotation.JsonProperty.Access;
 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 
 import org.genesys.blocks.util.JsonSidConverter;
@@ -46,6 +48,7 @@ public abstract class AuditedVersionedModelWithoutId extends VersionedModelWitho
 	@Column(updatable = false)
 	@JsonSerialize(converter = JsonSidConverter.class)
 	@Field(index = FieldIndex.no)
+	@JsonProperty(access = Access.READ_ONLY)
 	private Long createdBy;
 
 	/** The created date. */
@@ -59,6 +62,7 @@ public abstract class AuditedVersionedModelWithoutId extends VersionedModelWitho
 	@LastModifiedBy
 	@JsonSerialize(converter = JsonSidConverter.class)
 	@Field(index = FieldIndex.no)
+	@JsonProperty(access = Access.READ_ONLY)
 	private Long lastModifiedBy;
 
 	/** The last modified date. */