diff --git a/src/main/resources/changelog.txt b/src/main/resources/changelog.txt
index 4b6e4a73..4d685412 100644
--- a/src/main/resources/changelog.txt
+++ b/src/main/resources/changelog.txt
@@ -1,6 +1,14 @@
 Spring HATEOAS Changelog
 ========================
 
+Changes in version 1.2.3 (2021-01-13)
+----------------------------------------
+- #1432 - Upgrade to Spring Framework 5.3.3.
+- #1431 - RepresentationModelProcessor not invoked for PagedModel / CollectionModel consisting of RepresentationModels.
+- #1419 - Backport direct release to maven central.
+- #1416 - Use proper build plugins.
+- #1413 - Extracted mappings still contain regex matching expressions.
+
 Changes in version 1.2.2 (2020-12-09)
 ----------------------------------------
 - #1409 - Upgrade to Spring Framework 5.3.2.
diff --git a/src/test/java/org/springframework/hateoas/support/ChangelogCreator.java b/src/test/java/org/springframework/hateoas/support/ChangelogCreator.java
index 222d85a0..0db75527 100644
--- a/src/test/java/org/springframework/hateoas/support/ChangelogCreator.java
+++ b/src/test/java/org/springframework/hateoas/support/ChangelogCreator.java
@@ -38,7 +38,7 @@ import com.jayway.jsonpath.JsonPath;
  */
 class ChangelogCreator {
 
-	private static final int MILESTONE_ID = 56;
+	private static final int MILESTONE_ID = 58;
 	private static final String URI_TEMPLATE = "https://api.github.com/repos/spring-projects/spring-hateoas/issues?milestone={id}&state=closed";
 
 	public static void main(String... args) {
@@ -52,8 +52,7 @@ class ChangelogCreator {
 
 		HttpEntity<String> response = webClient //
 				.get().uri(URI_TEMPLATE, MILESTONE_ID) //
-				.exchange() //
-				.flatMap(clientResponse -> clientResponse.toEntity(String.class)) //
+				.exchangeToMono(clientResponse -> clientResponse.toEntity(String.class)) //
 				.block(Duration.ofSeconds(10));
 
 		boolean keepChecking = true;