diff --git a/node/src/main/resources/migration/node-core.changelog-master.xml b/node/src/main/resources/migration/node-core.changelog-master.xml
index 57b5d35760..ce77d1c08c 100644
--- a/node/src/main/resources/migration/node-core.changelog-master.xml
+++ b/node/src/main/resources/migration/node-core.changelog-master.xml
@@ -10,9 +10,8 @@
   -->
 
 <databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
-                   xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
                    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.5.xsd">
+                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.5.xsd">
 
     <include file="migration/node-core.changelog-init.xml"/>
     <include file="migration/node-core.changelog-v3.xml"/>
@@ -20,5 +19,6 @@
     <include file="migration/node-core.changelog-v5.xml"/>
     <include file="migration/node-core.changelog-pkey.xml"/>
     <include file="migration/node-core.changelog-postgres-blob.xml"/>
+    <include file="migration/node-core.changelog-tx-mapping.xml"/>
 
 </databaseChangeLog>
diff --git a/node/src/main/resources/migration/node-core.changelog-tx-mapping.xml b/node/src/main/resources/migration/node-core.changelog-tx-mapping.xml
new file mode 100644
index 0000000000..c85c5461d9
--- /dev/null
+++ b/node/src/main/resources/migration/node-core.changelog-tx-mapping.xml
@@ -0,0 +1,27 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<!--
+  ~ R3 Proprietary and Confidential
+  ~
+  ~ Copyright (c) 2018 R3 Limited.  All rights reserved.
+  ~
+  ~ The intellectual and technical concepts contained herein are proprietary to R3 and its suppliers and are protected by trade secret law.
+  ~
+  ~ Distribution of this file or any portion thereof via any medium without the express permission of R3 is strictly prohibited.
+  -->
+
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.5.xsd">
+    <changeSet author="R3.Corda" id="add_tx_mapping_column">
+        <addColumn tableName="node_transactions">
+            <column name="state_machine_run_id" type="NVARCHAR(36)">
+                <constraints nullable="true"/>
+            </column>
+        </addColumn>
+        <!-- Copy old values from the table to the new column -->
+        <sql>update node_transactions set state_machine_run_id=(select state_machine_run_id from
+            node_transaction_mappings where node_transactions.tx_id = node_transaction_mappings.tx_id)
+        </sql>
+        <dropTable tableName="node_transaction_mappings"/>
+    </changeSet>
+</databaseChangeLog>
\ No newline at end of file