diff --git a/CHANGES.txt b/CHANGES.txt
index c8d75b2dd8..31a9ce6c90 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,6 @@
+4.0.21
+
+
 4.0.20
  * Add option to disable cqlsh history (CASSANDRA-21180)
  * Rate limit password changes (CASSANDRA-21202)
@@ -13,6 +16,7 @@
  * Leveled Compaction doesn't validate maxBytesForLevel when the table is altered/created (CASSANDRA-20570)
  * Updated dtest-api to 0.0.18 and removed JMX-related classes that now live in the dtest-api (CASSANDRA-20884)
 
+
 4.0.19
  * Fixed incorrect error message constant for keyspace name length validation (CASSANDRA-20915)
  * update shaded cassandra-driver-core to 3.11.5 (CASSANDRA-20904)
diff --git a/build.xml b/build.xml
index 07a93fbc9d..826e6c1d86 100644
--- a/build.xml
+++ b/build.xml
@@ -34,7 +34,7 @@
     <property name="debuglevel" value="source,lines,vars"/>
 
     <!-- default version and SCM information -->
-    <property name="base.version" value="4.0.20"/>
+    <property name="base.version" value="4.0.21"/>
     <property name="scm.connection" value="scm:https://gitbox.apache.org/repos/asf/cassandra.git"/>
     <property name="scm.developerConnection" value="scm:https://gitbox.apache.org/repos/asf/cassandra.git"/>
     <property name="scm.url" value="https://gitbox.apache.org/repos/asf?p=cassandra.git"/>