diff --git a/spring-web/src/main/java/org/springframework/http/HttpStatus.java b/spring-web/src/main/java/org/springframework/http/HttpStatus.java
index 1c68e23b8ab..466ad8dd838 100644
--- a/spring-web/src/main/java/org/springframework/http/HttpStatus.java
+++ b/spring-web/src/main/java/org/springframework/http/HttpStatus.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -319,6 +319,12 @@ public enum HttpStatus {
 	 * @see <a href="https://tools.ietf.org/html/rfc4918#section-11.4">WebDAV</a>
 	 */
 	FAILED_DEPENDENCY(424, "Failed Dependency"),
+	/**
+	 * {@code 425 Too Early}.
+	 * @since 5.2
+	 * @see <a href="https://tools.ietf.org/html/rfc8470">RFC 8470</a>
+	 */
+	TOO_EARLY(425, "Too Early"),
 	/**
 	 * {@code 426 Upgrade Required}.
 	 * @see <a href="https://tools.ietf.org/html/rfc2817#section-6">Upgrading to TLS Within HTTP/1.1</a>
@@ -447,6 +453,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#INFORMATIONAL}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is1xxInformational() {
@@ -457,6 +464,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#SUCCESSFUL}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is2xxSuccessful() {
@@ -467,6 +475,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#REDIRECTION}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is3xxRedirection() {
@@ -477,6 +486,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#CLIENT_ERROR}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is4xxClientError() {
@@ -487,6 +497,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#SERVER_ERROR}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is5xxServerError() {
diff --git a/spring-web/src/test/java/org/springframework/http/HttpStatusTests.java b/spring-web/src/test/java/org/springframework/http/HttpStatusTests.java
index 59bba7c1c45..ca7b3b69ed4 100644
--- a/spring-web/src/test/java/org/springframework/http/HttpStatusTests.java
+++ b/spring-web/src/test/java/org/springframework/http/HttpStatusTests.java
@@ -24,11 +24,14 @@ import org.junit.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-/** @author Arjen Poutsma */
+/**
+ * @author Arjen Poutsma
+ */
 public class HttpStatusTests {
 
 	private Map<Integer, String> statusCodes = new LinkedHashMap<>();
 
+
 	@Before
 	public void createStatusCodes() {
 		statusCodes.put(100, "CONTINUE");
@@ -81,6 +84,7 @@ public class HttpStatusTests {
 		statusCodes.put(422, "UNPROCESSABLE_ENTITY");
 		statusCodes.put(423, "LOCKED");
 		statusCodes.put(424, "FAILED_DEPENDENCY");
+		statusCodes.put(425, "TOO_EARLY");
 		statusCodes.put(426, "UPGRADE_REQUIRED");
 		statusCodes.put(428, "PRECONDITION_REQUIRED");
 		statusCodes.put(429, "TOO_MANY_REQUESTS");
@@ -101,6 +105,7 @@ public class HttpStatusTests {
 		statusCodes.put(511, "NETWORK_AUTHENTICATION_REQUIRED");
 	}
 
+
 	@Test
 	public void fromMapToEnum() {
 		for (Map.Entry<Integer, String> entry : statusCodes.entrySet()) {
@@ -113,7 +118,6 @@ public class HttpStatusTests {
 
 	@Test
 	public void fromEnumToMap() {
-
 		for (HttpStatus status : HttpStatus.values()) {
 			int value = status.value();
 			if (value == 302 || value == 413 || value == 414) {
@@ -123,4 +127,5 @@ public class HttpStatusTests {
 			assertThat(status.name()).as("Invalid name for [" + value + "]").isEqualTo(statusCodes.get(value));
 		}
 	}
+
 }