diff --git a/.ci/bwcVersions b/.ci/bwcVersions
index 67b7dcc1950f3..0983c245f730b 100644
--- a/.ci/bwcVersions
+++ b/.ci/bwcVersions
@@ -105,3 +105,4 @@ BWC_VERSION:
   - "1.3.18"
   - "1.3.19"
   - "1.3.20"
+  - "1.3.21"
diff --git a/server/src/main/java/org/opensearch/Version.java b/server/src/main/java/org/opensearch/Version.java
index a59a07ec8c545..1413e827f761f 100644
--- a/server/src/main/java/org/opensearch/Version.java
+++ b/server/src/main/java/org/opensearch/Version.java
@@ -101,6 +101,7 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_1_3_18 = new Version(1031899, org.apache.lucene.util.Version.LUCENE_8_10_1);
     public static final Version V_1_3_19 = new Version(1031999, org.apache.lucene.util.Version.LUCENE_8_10_1);
     public static final Version V_1_3_20 = new Version(1032099, org.apache.lucene.util.Version.LUCENE_8_10_1);
+    public static final Version V_1_3_21 = new Version(1032199, org.apache.lucene.util.Version.LUCENE_8_10_1);
     public static final Version V_1_4_0 = new Version(1040099, org.apache.lucene.util.Version.LUCENE_8_10_1);
     public static final Version CURRENT = V_1_4_0;