diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/_types/analysis/KuromojiAnalyzer.java b/java-client/src/main/java/co/elastic/clients/elasticsearch/_types/analysis/KuromojiAnalyzer.java
index 1f1202ae7e..8ff279cbde 100644
--- a/java-client/src/main/java/co/elastic/clients/elasticsearch/_types/analysis/KuromojiAnalyzer.java
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/_types/analysis/KuromojiAnalyzer.java
@@ -26,7 +26,6 @@
 import co.elastic.clients.json.JsonpUtils;
 import co.elastic.clients.json.ObjectBuilderDeserializer;
 import co.elastic.clients.json.ObjectDeserializer;
-import co.elastic.clients.util.ApiTypeHelper;
 import co.elastic.clients.util.ObjectBuilder;
 import co.elastic.clients.util.WithJsonObjectBuilderBase;
 import jakarta.json.stream.JsonGenerator;
@@ -60,6 +59,7 @@
  */
 @JsonpDeserializable
 public class KuromojiAnalyzer implements AnalyzerVariant, JsonpSerializable {
+	@Nullable
 	private final KuromojiTokenizationMode mode;
 
 	@Nullable
@@ -69,7 +69,7 @@ public class KuromojiAnalyzer implements AnalyzerVariant, JsonpSerializable {
 
 	private KuromojiAnalyzer(Builder builder) {
 
-		this.mode = ApiTypeHelper.requireNonNull(builder.mode, this, "mode");
+		this.mode = builder.mode;
 		this.userDictionary = builder.userDictionary;
 
 	}
@@ -87,8 +87,9 @@ public Analyzer.Kind _analyzerKind() {
 	}
 
 	/**
-	 * Required - API name: {@code mode}
+	 * API name: {@code mode}
 	 */
+	@Nullable
 	public final KuromojiTokenizationMode mode() {
 		return this.mode;
 	}
@@ -114,8 +115,10 @@ protected void serializeInternal(JsonGenerator generator, JsonpMapper mapper) {
 
 		generator.write("type", "kuromoji");
 
-		generator.writeKey("mode");
-		this.mode.serialize(generator, mapper);
+		if (this.mode != null) {
+			generator.writeKey("mode");
+			this.mode.serialize(generator, mapper);
+		}
 		if (this.userDictionary != null) {
 			generator.writeKey("user_dictionary");
 			generator.write(this.userDictionary);
@@ -136,15 +139,16 @@ public String toString() {
 	 */
 
 	public static class Builder extends WithJsonObjectBuilderBase<Builder> implements ObjectBuilder<KuromojiAnalyzer> {
+		@Nullable
 		private KuromojiTokenizationMode mode;
 
 		@Nullable
 		private String userDictionary;
 
 		/**
-		 * Required - API name: {@code mode}
+		 * API name: {@code mode}
 		 */
-		public final Builder mode(KuromojiTokenizationMode value) {
+		public final Builder mode(@Nullable KuromojiTokenizationMode value) {
 			this.mode = value;
 			return this;
 		}
diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/doc-files/api-spec.html b/java-client/src/main/java/co/elastic/clients/elasticsearch/doc-files/api-spec.html
index 1255fff13f..7eb5886ba2 100644
--- a/java-client/src/main/java/co/elastic/clients/elasticsearch/doc-files/api-spec.html
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/doc-files/api-spec.html
@@ -3082,10 +3082,10 @@
 'transform._types.PivotGroupByContainer': 'transform/_types/Transform.ts#L70-L78',
 'transform._types.RetentionPolicy': 'transform/_types/Transform.ts#L88-L96',
 'transform._types.RetentionPolicyContainer': 'transform/_types/Transform.ts#L80-L86',
-'transform._types.Settings': 'transform/_types/Transform.ts#L98-L144',
-'transform._types.Source': 'transform/_types/Transform.ts#L146-L165',
-'transform._types.SyncContainer': 'transform/_types/Transform.ts#L169-L175',
-'transform._types.TimeSync': 'transform/_types/Transform.ts#L177-L189',
+'transform._types.Settings': 'transform/_types/Transform.ts#L98-L154',
+'transform._types.Source': 'transform/_types/Transform.ts#L156-L175',
+'transform._types.SyncContainer': 'transform/_types/Transform.ts#L179-L185',
+'transform._types.TimeSync': 'transform/_types/Transform.ts#L187-L199',
 'transform.delete_transform.Request': 'transform/delete_transform/DeleteTransformRequest.ts#L24-L64',
 'transform.delete_transform.Response': 'transform/delete_transform/DeleteTransformResponse.ts#L22-L25',
 'transform.get_transform.Request': 'transform/get_transform/GetTransformRequest.ts#L24-L84',
@@ -3322,10 +3322,10 @@
         if (hash.length > 1) {
             hash = hash.substring(1);
         }
-        window.location = "https://github.com/elastic/elasticsearch-specification/tree/32e19181074f337369c123c1b7e9518f71b8bb6b/specification/" + (paths[hash] || "");
+        window.location = "https://github.com/elastic/elasticsearch-specification/tree/d4d8c79c221bc01acf5f802bc5c41632dcf6cde9/specification/" + (paths[hash] || "");
     </script>
 </head>
 <body>
-    Please see the <a href="https://github.com/elastic/elasticsearch-specification/tree/32e19181074f337369c123c1b7e9518f71b8bb6b/specification/">Elasticsearch API specification</a>.
+    Please see the <a href="https://github.com/elastic/elasticsearch-specification/tree/d4d8c79c221bc01acf5f802bc5c41632dcf6cde9/specification/">Elasticsearch API specification</a>.
 </body>
 </html>
diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/transform/Settings.java b/java-client/src/main/java/co/elastic/clients/elasticsearch/transform/Settings.java
index 1be72a0fd3..920f7aa72e 100644
--- a/java-client/src/main/java/co/elastic/clients/elasticsearch/transform/Settings.java
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/transform/Settings.java
@@ -76,6 +76,9 @@ public class Settings implements JsonpSerializable {
 	@Nullable
 	private final Integer maxPageSearchSize;
 
+	@Nullable
+	private final Boolean usePointInTime;
+
 	@Nullable
 	private final Boolean unattended;
 
@@ -88,6 +91,7 @@ private Settings(Builder builder) {
 		this.deduceMappings = builder.deduceMappings;
 		this.docsPerSecond = builder.docsPerSecond;
 		this.maxPageSearchSize = builder.maxPageSearchSize;
+		this.usePointInTime = builder.usePointInTime;
 		this.unattended = builder.unattended;
 
 	}
@@ -159,6 +163,22 @@ public final Integer maxPageSearchSize() {
 		return this.maxPageSearchSize;
 	}
 
+	/**
+	 * Specifies whether the transform checkpoint will use the Point In Time API
+	 * while searching over the source index. In general, Point In Time is an
+	 * optimization that will reduce pressure on the source index by reducing the
+	 * amount of refreshes and merges, but it can be expensive if a large number of
+	 * Point In Times are opened and closed for a given index. The benefits and
+	 * impact depend on the data being searched, the ingest rate into the source
+	 * index, and the amount of other consumers searching the same source index.
+	 * <p>
+	 * API name: {@code use_point_in_time}
+	 */
+	@Nullable
+	public final Boolean usePointInTime() {
+		return this.usePointInTime;
+	}
+
 	/**
 	 * If <code>true</code>, the transform runs in unattended mode. In unattended
 	 * mode, the transform retries indefinitely in case of an error which means the
@@ -207,6 +227,11 @@ protected void serializeInternal(JsonGenerator generator, JsonpMapper mapper) {
 			generator.writeKey("max_page_search_size");
 			generator.write(this.maxPageSearchSize);
 
+		}
+		if (this.usePointInTime != null) {
+			generator.writeKey("use_point_in_time");
+			generator.write(this.usePointInTime);
+
 		}
 		if (this.unattended != null) {
 			generator.writeKey("unattended");
@@ -243,6 +268,9 @@ public static class Builder extends WithJsonObjectBuilderBase<Builder> implement
 		@Nullable
 		private Integer maxPageSearchSize;
 
+		@Nullable
+		private Boolean usePointInTime;
+
 		@Nullable
 		private Boolean unattended;
 
@@ -309,6 +337,22 @@ public final Builder maxPageSearchSize(@Nullable Integer value) {
 			return this;
 		}
 
+		/**
+		 * Specifies whether the transform checkpoint will use the Point In Time API
+		 * while searching over the source index. In general, Point In Time is an
+		 * optimization that will reduce pressure on the source index by reducing the
+		 * amount of refreshes and merges, but it can be expensive if a large number of
+		 * Point In Times are opened and closed for a given index. The benefits and
+		 * impact depend on the data being searched, the ingest rate into the source
+		 * index, and the amount of other consumers searching the same source index.
+		 * <p>
+		 * API name: {@code use_point_in_time}
+		 */
+		public final Builder usePointInTime(@Nullable Boolean value) {
+			this.usePointInTime = value;
+			return this;
+		}
+
 		/**
 		 * If <code>true</code>, the transform runs in unattended mode. In unattended
 		 * mode, the transform retries indefinitely in case of an error which means the
@@ -355,6 +399,7 @@ protected static void setupSettingsDeserializer(ObjectDeserializer<Settings.Buil
 		op.add(Builder::deduceMappings, JsonpDeserializer.booleanDeserializer(), "deduce_mappings");
 		op.add(Builder::docsPerSecond, JsonpDeserializer.floatDeserializer(), "docs_per_second");
 		op.add(Builder::maxPageSearchSize, JsonpDeserializer.integerDeserializer(), "max_page_search_size");
+		op.add(Builder::usePointInTime, JsonpDeserializer.booleanDeserializer(), "use_point_in_time");
 		op.add(Builder::unattended, JsonpDeserializer.booleanDeserializer(), "unattended");
 
 	}