diff --git a/src/main/resources/changelog.txt b/src/main/resources/changelog.txt
index 5a836ef18..e74df7867 100644
--- a/src/main/resources/changelog.txt
+++ b/src/main/resources/changelog.txt
@@ -1,6 +1,11 @@
 Spring Data Elasticsearch Changelog
 ===================================
 
+Changes in version 2.1.21.RELEASE (2019-05-10)
+----------------------------------------------
+* DATAES-555 - Release 2.1.21 (Ingalls SR21).
+
+
 Changes in version 3.1.7.RELEASE (2019-05-10)
 ---------------------------------------------
 * DATAES-557 - Release 3.1.7 (Lovelace SR7).