diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77981d5a68..00118cc4ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### Added
 - Added support for "smartcn" analyzer ([#605](https://github.com/opensearch-project/opensearch-java/pull/605))
 - Added support for "cjk" analyzer ([#604](https://github.com/opensearch-project/opensearch-java/pull/604))
+- Added size attribute to MultiTermsAggregation ([#614](https://github.com/opensearch-project/opensearch-java/pull/614))
 
 ### Dependencies
 - Bumps `org.ajoberstar.grgit:grgit-gradle` from 5.0.0 to 5.2.0
diff --git a/java-client/src/main/java/org/opensearch/client/opensearch/_types/aggregations/MultiTermsAggregation.java b/java-client/src/main/java/org/opensearch/client/opensearch/_types/aggregations/MultiTermsAggregation.java
index 7470809839..a4b58fe966 100644
--- a/java-client/src/main/java/org/opensearch/client/opensearch/_types/aggregations/MultiTermsAggregation.java
+++ b/java-client/src/main/java/org/opensearch/client/opensearch/_types/aggregations/MultiTermsAggregation.java
@@ -43,19 +43,24 @@
 import java.util.List;
 import java.util.function.Function;
 
+import javax.annotation.Nullable;
+
 // typedef: _types.aggregations.MultiTermsAggregation
 
 @JsonpDeserializable
 public class MultiTermsAggregation extends BucketAggregationBase implements AggregationVariant {
 	private final List<MultiTermLookup> terms;
 
+	@Nullable
+	private final Integer size;
+
 	// ---------------------------------------------------------------------------------------------
 
 	private MultiTermsAggregation(Builder builder) {
 		super(builder);
 
 		this.terms = ApiTypeHelper.unmodifiableRequired(builder.terms, this, "terms");
-
+		this.size = builder.size;
 	}
 
 	public static MultiTermsAggregation of(Function<Builder, ObjectBuilder<MultiTermsAggregation>> fn) {
@@ -77,9 +82,22 @@ public final List<MultiTermLookup> terms() {
 		return this.terms;
 	}
 
+	/**
+	 * API name: {@code size}
+	 */
+	@Nullable
+	public final Integer size() {
+		return this.size;
+	}
+
 	protected void serializeInternal(JsonGenerator generator, JsonpMapper mapper) {
 
 		super.serializeInternal(generator, mapper);
+		if (this.size != null) {
+			generator.writeKey("size");
+			generator.write(this.size);
+
+		}
 		if (ApiTypeHelper.isDefined(this.terms)) {
 			generator.writeKey("terms");
 			generator.writeStartArray();
@@ -104,6 +122,9 @@ public static class Builder extends BucketAggregationBase.AbstractBuilder<Builde
 				ObjectBuilder<MultiTermsAggregation> {
 		private List<MultiTermLookup> terms;
 
+		@Nullable
+		private Integer size;
+
 		/**
 		 * Required - API name: {@code terms}
 		 * <p>
@@ -133,6 +154,14 @@ public final Builder terms(Function<MultiTermLookup.Builder, ObjectBuilder<Multi
 			return terms(fn.apply(new MultiTermLookup.Builder()).build());
 		}
 
+		/**
+		 * API name: {@code size}
+		 */
+		public final Builder size(@Nullable Integer value) {
+			this.size = value;
+			return this;
+		}
+
 		@Override
 		protected Builder self() {
 			return this;
@@ -161,8 +190,8 @@ public MultiTermsAggregation build() {
 
 	protected static void setupMultiTermsAggregationDeserializer(ObjectDeserializer<MultiTermsAggregation.Builder> op) {
 		BucketAggregationBase.setupBucketAggregationBaseDeserializer(op);
+		op.add(Builder::size, JsonpDeserializer.integerDeserializer(), "size");
 		op.add(Builder::terms, JsonpDeserializer.arrayDeserializer(MultiTermLookup._DESERIALIZER), "terms");
-
 	}
 
 }