diff --git a/CHANGES.txt b/CHANGES.txt
index a2e36542dc..91b3ed8ee2 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -185,6 +185,7 @@
 
 
 3.11.2
+ * Add DEFAULT, UNSET, MBEAN and MBEANS to `ReservedKeywords` (CASSANDRA-14205)
  * Print correct snitch info from nodetool describecluster (CASSANDRA-13528)
  * Enable CDC unittest (CASSANDRA-14141)
  * Acquire read lock before accessing CompactionStrategyManager fields (CASSANDRA-14139)
diff --git a/src/java/org/apache/cassandra/cql3/ReservedKeywords.java b/src/java/org/apache/cassandra/cql3/ReservedKeywords.java
index ee052a7376..30b1a6ed91 100644
--- a/src/java/org/apache/cassandra/cql3/ReservedKeywords.java
+++ b/src/java/org/apache/cassandra/cql3/ReservedKeywords.java
@@ -85,7 +85,11 @@ class ReservedKeywords
                                                      "NAN",
                                                      "INFINITY",
                                                      "OR",
-                                                     "REPLACE" };
+                                                     "REPLACE",
+                                                     "DEFAULT",
+                                                     "UNSET",
+                                                     "MBEAN",
+                                                     "MBEANS"};
 
     private static final Set<String> reservedSet = ImmutableSet.copyOf(reservedKeywords);