diff --git a/CHANGES.txt b/CHANGES.txt
index f14cf1e6c1..e8d8612bf5 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,4 +1,5 @@
 5.1
+ * Expose StorageService.dropPreparedStatements via JMX (CASSANDRA-20870)
  * Expose Metric for Prepared Statement Cache Size (in bytes) (CASSANDRA-20864)
  * Add support for BEGIN TRANSACTION to allow mutations that touch multiple partitions (CASSANDRA-20857)
  * AutoRepair: Safeguard Full repair against disk protection(CASSANDRA-20045)
diff --git a/src/java/org/apache/cassandra/service/StorageService.java b/src/java/org/apache/cassandra/service/StorageService.java
index 2c692932c3..8d861618a5 100644
--- a/src/java/org/apache/cassandra/service/StorageService.java
+++ b/src/java/org/apache/cassandra/service/StorageService.java
@@ -2756,6 +2756,12 @@ public class StorageService extends NotificationBroadcasterSupport implements IE
         return statements;
     }
 
+    @Override
+    public void dropPreparedStatements(boolean memoryOnly)
+    {
+        QueryProcessor.instance.clearPreparedStatements(memoryOnly);
+    }
+
     public void forceKeyspaceCompaction(boolean splitOutput, String keyspaceName, String... tableNames) throws IOException, ExecutionException, InterruptedException
     {
         for (ColumnFamilyStore cfStore : getValidColumnFamilies(true, false, keyspaceName, tableNames))
diff --git a/src/java/org/apache/cassandra/service/StorageServiceMBean.java b/src/java/org/apache/cassandra/service/StorageServiceMBean.java
index 5d4781c546..e5cbd980c4 100644
--- a/src/java/org/apache/cassandra/service/StorageServiceMBean.java
+++ b/src/java/org/apache/cassandra/service/StorageServiceMBean.java
@@ -1375,6 +1375,9 @@ public interface StorageServiceMBean extends NotificationEmitter
     void setPaxosRepairRaceWait(boolean paxosRepairCoordinatorWait);
 
     boolean getPaxosRepairRaceWait();
+
+    public void dropPreparedStatements(boolean memoryOnly);
+
     // Comma delimited list of "nodeId=dc:rack" or "endpoint=dc:rack"
     void alterTopology(String updates);
     /** Gets the names of all tables for the given keyspace */