diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/_types/mapping/TextIndexPrefixes.java b/java-client/src/main/java/co/elastic/clients/elasticsearch/_types/mapping/TextIndexPrefixes.java
index 1802423738..7dc1a8c21b 100644
--- a/java-client/src/main/java/co/elastic/clients/elasticsearch/_types/mapping/TextIndexPrefixes.java
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/_types/mapping/TextIndexPrefixes.java
@@ -26,13 +26,13 @@
 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;
 import java.lang.Integer;
 import java.util.Objects;
 import java.util.function.Function;
+import javax.annotation.Nullable;
 
 //----------------------------------------------------------------
 //       THIS CODE IS GENERATED. MANUAL EDITS WILL BE LOST.
@@ -59,16 +59,18 @@
  */
 @JsonpDeserializable
 public class TextIndexPrefixes implements JsonpSerializable {
-	private final int maxChars;
+	@Nullable
+	private final Integer maxChars;
 
-	private final int minChars;
+	@Nullable
+	private final Integer minChars;
 
 	// ---------------------------------------------------------------------------------------------
 
 	private TextIndexPrefixes(Builder builder) {
 
-		this.maxChars = ApiTypeHelper.requireNonNull(builder.maxChars, this, "maxChars", 0);
-		this.minChars = ApiTypeHelper.requireNonNull(builder.minChars, this, "minChars", 0);
+		this.maxChars = builder.maxChars;
+		this.minChars = builder.minChars;
 
 	}
 
@@ -77,16 +79,18 @@ public static TextIndexPrefixes of(Function<Builder, ObjectBuilder<TextIndexPref
 	}
 
 	/**
-	 * Required - API name: {@code max_chars}
+	 * API name: {@code max_chars}
 	 */
-	public final int maxChars() {
+	@Nullable
+	public final Integer maxChars() {
 		return this.maxChars;
 	}
 
 	/**
-	 * Required - API name: {@code min_chars}
+	 * API name: {@code min_chars}
 	 */
-	public final int minChars() {
+	@Nullable
+	public final Integer minChars() {
 		return this.minChars;
 	}
 
@@ -101,11 +105,16 @@ public void serialize(JsonGenerator generator, JsonpMapper mapper) {
 
 	protected void serializeInternal(JsonGenerator generator, JsonpMapper mapper) {
 
-		generator.writeKey("max_chars");
-		generator.write(this.maxChars);
+		if (this.maxChars != null) {
+			generator.writeKey("max_chars");
+			generator.write(this.maxChars);
 
-		generator.writeKey("min_chars");
-		generator.write(this.minChars);
+		}
+		if (this.minChars != null) {
+			generator.writeKey("min_chars");
+			generator.write(this.minChars);
+
+		}
 
 	}
 
@@ -121,8 +130,10 @@ public String toString() {
 	 */
 
 	public static class Builder extends WithJsonObjectBuilderBase<Builder> implements ObjectBuilder<TextIndexPrefixes> {
+		@Nullable
 		private Integer maxChars;
 
+		@Nullable
 		private Integer minChars;
 
 		public Builder() {
@@ -133,17 +144,17 @@ private Builder(TextIndexPrefixes instance) {
 
 		}
 		/**
-		 * Required - API name: {@code max_chars}
+		 * API name: {@code max_chars}
 		 */
-		public final Builder maxChars(int value) {
+		public final Builder maxChars(@Nullable Integer value) {
 			this.maxChars = value;
 			return this;
 		}
 
 		/**
-		 * Required - API name: {@code min_chars}
+		 * API name: {@code min_chars}
 		 */
-		public final Builder minChars(int value) {
+		public final Builder minChars(@Nullable Integer value) {
 			this.minChars = 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 4751164572..34f667e788 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
@@ -2184,7 +2184,7 @@
 'inference.stream_completion.Response': 'inference/stream_completion/StreamInferenceResponse.ts#L22-L25',
 'inference.text_embedding.Request': 'inference/text_embedding/TextEmbeddingRequest.ts#L25-L79',
 'inference.text_embedding.Response': 'inference/text_embedding/TextEmbeddingResponse.ts#L22-L25',
-'inference.update.Request': 'inference/update/UpdateInferenceRequest.ts#L25-L64',
+'inference.update.Request': 'inference/update/UpdateInferenceRequest.ts#L26-L74',
 'inference.update.Response': 'inference/update/UpdateInferenceResponse.ts#L22-L25',
 'ingest._types.AppendProcessor': 'ingest/_types/Processors.ts#L334-L366',
 'ingest._types.AttachmentProcessor': 'ingest/_types/Processors.ts#L368-L419',
@@ -3571,10 +3571,10 @@
         if (hash.length > 1) {
             hash = hash.substring(1);
         }
-        window.location = "https://github.com/elastic/elasticsearch-specification/tree/7c4055b7a8e6c585dd8ed999086000838dcdf35e/specification/" + (paths[hash] || "");
+        window.location = "https://github.com/elastic/elasticsearch-specification/tree/e889bcfe71d60657cae811fb0b8e105569cc499f/specification/" + (paths[hash] || "");
     </script>
 </head>
 <body>
-    Please see the <a href="https://github.com/elastic/elasticsearch-specification/tree/7c4055b7a8e6c585dd8ed999086000838dcdf35e/specification/">Elasticsearch API specification</a>.
+    Please see the <a href="https://github.com/elastic/elasticsearch-specification/tree/e889bcfe71d60657cae811fb0b8e105569cc499f/specification/">Elasticsearch API specification</a>.
 </body>
 </html>
diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/inference/PutRequest.java b/java-client/src/main/java/co/elastic/clients/elasticsearch/inference/PutRequest.java
index a32dedef7b..ebb6d4febb 100644
--- a/java-client/src/main/java/co/elastic/clients/elasticsearch/inference/PutRequest.java
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/inference/PutRequest.java
@@ -171,7 +171,9 @@ public final TaskType taskType() {
 
 	/**
 	 * Specifies the amount of time to wait for the inference endpoint to be
-	 * created.
+	 * created. The default depends on the task type: 120s for
+	 * <code>completion</code> and <code>chat_completion</code>, and 30s for all
+	 * other task types.
 	 * <p>
 	 * API name: {@code timeout}
 	 */
@@ -244,7 +246,9 @@ public final Builder taskType(@Nullable TaskType value) {
 
 		/**
 		 * Specifies the amount of time to wait for the inference endpoint to be
-		 * created.
+		 * created. The default depends on the task type: 120s for
+		 * <code>completion</code> and <code>chat_completion</code>, and 30s for all
+		 * other task types.
 		 * <p>
 		 * API name: {@code timeout}
 		 */
@@ -255,7 +259,9 @@ public final Builder timeout(@Nullable Time value) {
 
 		/**
 		 * Specifies the amount of time to wait for the inference endpoint to be
-		 * created.
+		 * created. The default depends on the task type: 120s for
+		 * <code>completion</code> and <code>chat_completion</code>, and 30s for all
+		 * other task types.
 		 * <p>
 		 * API name: {@code timeout}
 		 */
diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/inference/UpdateInferenceRequest.java b/java-client/src/main/java/co/elastic/clients/elasticsearch/inference/UpdateInferenceRequest.java
index 5a48e9c6de..300825e17b 100644
--- a/java-client/src/main/java/co/elastic/clients/elasticsearch/inference/UpdateInferenceRequest.java
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/inference/UpdateInferenceRequest.java
@@ -21,6 +21,7 @@
 
 import co.elastic.clients.elasticsearch._types.ErrorResponse;
 import co.elastic.clients.elasticsearch._types.RequestBase;
+import co.elastic.clients.elasticsearch._types.Time;
 import co.elastic.clients.json.JsonpDeserializable;
 import co.elastic.clients.json.JsonpDeserializer;
 import co.elastic.clients.json.JsonpMapper;
@@ -34,7 +35,6 @@
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import java.lang.String;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
@@ -85,6 +85,9 @@ public class UpdateInferenceRequest extends RequestBase implements JsonpSerializ
 	@Nullable
 	private final TaskType taskType;
 
+	@Nullable
+	private final Time timeout;
+
 	private final InferenceEndpoint inferenceConfig;
 
 	// ---------------------------------------------------------------------------------------------
@@ -93,6 +96,7 @@ private UpdateInferenceRequest(Builder builder) {
 
 		this.inferenceId = ApiTypeHelper.requireNonNull(builder.inferenceId, this, "inferenceId");
 		this.taskType = builder.taskType;
+		this.timeout = builder.timeout;
 		this.inferenceConfig = ApiTypeHelper.requireNonNull(builder.inferenceConfig, this, "inferenceConfig");
 
 	}
@@ -120,6 +124,19 @@ public final TaskType taskType() {
 		return this.taskType;
 	}
 
+	/**
+	 * Specifies the amount of time to wait for the inference endpoint to be
+	 * updated. The default depends on the task type: 120s for
+	 * <code>completion</code> and <code>chat_completion</code>, and 30s for all
+	 * other task types.
+	 * <p>
+	 * API name: {@code timeout}
+	 */
+	@Nullable
+	public final Time timeout() {
+		return this.timeout;
+	}
+
 	/**
 	 * Required - Request body.
 	 */
@@ -149,6 +166,9 @@ public static class Builder extends RequestBase.AbstractBuilder<Builder>
 		@Nullable
 		private TaskType taskType;
 
+		@Nullable
+		private Time timeout;
+
 		private InferenceEndpoint inferenceConfig;
 
 		public Builder() {
@@ -156,6 +176,7 @@ public Builder() {
 		private Builder(UpdateInferenceRequest instance) {
 			this.inferenceId = instance.inferenceId;
 			this.taskType = instance.taskType;
+			this.timeout = instance.timeout;
 			this.inferenceConfig = instance.inferenceConfig;
 
 		}
@@ -179,6 +200,31 @@ public final Builder taskType(@Nullable TaskType value) {
 			return this;
 		}
 
+		/**
+		 * Specifies the amount of time to wait for the inference endpoint to be
+		 * updated. The default depends on the task type: 120s for
+		 * <code>completion</code> and <code>chat_completion</code>, and 30s for all
+		 * other task types.
+		 * <p>
+		 * API name: {@code timeout}
+		 */
+		public final Builder timeout(@Nullable Time value) {
+			this.timeout = value;
+			return this;
+		}
+
+		/**
+		 * Specifies the amount of time to wait for the inference endpoint to be
+		 * updated. The default depends on the task type: 120s for
+		 * <code>completion</code> and <code>chat_completion</code>, and 30s for all
+		 * other task types.
+		 * <p>
+		 * API name: {@code timeout}
+		 */
+		public final Builder timeout(Function<Time.Builder, ObjectBuilder<Time>> fn) {
+			return this.timeout(fn.apply(new Time.Builder()).build());
+		}
+
 		/**
 		 * Required - Request body.
 		 */
@@ -306,7 +352,11 @@ protected static JsonpDeserializer<UpdateInferenceRequest> createUpdateInference
 
 			// Request parameters
 			request -> {
-				return Collections.emptyMap();
+				Map<String, String> params = new HashMap<>();
+				if (request.timeout != null) {
+					params.put("timeout", request.timeout._toJsonString());
+				}
+				return params;
 
 			}, SimpleEndpoint.emptyMap(), true, UpdateInferenceResponse._DESERIALIZER);
 }