diff --git a/java-spring/accounts-query-side-backend/src/main/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountInfoUpdateService.java b/java-spring/accounts-query-side-backend/src/main/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountInfoUpdateService.java
index 973e661..e86d57c 100644
--- a/java-spring/accounts-query-side-backend/src/main/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountInfoUpdateService.java
+++ b/java-spring/accounts-query-side-backend/src/main/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountInfoUpdateService.java
@@ -1,6 +1,7 @@
 package net.chrisrichardson.eventstore.javaexamples.banking.backend.queryside.accounts;
 
 import com.mongodb.WriteResult;
+import io.eventuate.Int128;
 import net.chrisrichardson.eventstore.javaexamples.banking.common.accounts.AccountChangeInfo;
 import net.chrisrichardson.eventstore.javaexamples.banking.common.accounts.AccountTransactionInfo;
 import net.chrisrichardson.eventstore.javaexamples.banking.common.transactions.TransferState;
@@ -29,7 +30,7 @@ public class AccountInfoUpdateService {
   }
 
 
-  public void create(String accountId, String customerId, String title, BigDecimal initialBalance, String description, String version) {
+  public void create(String accountId, String customerId, String title, BigDecimal initialBalance, String description, Int128 version) {
     try {
       AccountChangeInfo ci = new AccountChangeInfo();
       ci.setAmount(toIntegerRepr(initialBalance));
@@ -40,8 +41,8 @@ public class AccountInfoUpdateService {
                       .set("description", description)
                       .set("balance", toIntegerRepr(initialBalance))
                       .push("changes", ci)
-                      .set("creationDate", getFromEventId(version))
-                      .set("version", version),
+                      .set("creationDate", new Date(version.getHi()))
+                      .set("version", version.asString()),
               AccountInfo.class);
       logger.info("Saved in mongo");
 
@@ -81,12 +82,4 @@ public class AccountInfoUpdateService {
                       set("transactions." + transactionId + ".status", status),
               AccountInfo.class);
   }
-
-  private Date getFromEventId(String eventId) {
-    String[] s = eventId.split("-");
-    if (s.length != 2) {
-      return new Date();
-    }
-    return new Date(Long.parseUnsignedLong(s[0], 16));
-  }
 }
diff --git a/java-spring/accounts-query-side-backend/src/main/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountQueryWorkflow.java b/java-spring/accounts-query-side-backend/src/main/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountQueryWorkflow.java
index 6dd2217..5437c8e 100644
--- a/java-spring/accounts-query-side-backend/src/main/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountQueryWorkflow.java
+++ b/java-spring/accounts-query-side-backend/src/main/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountQueryWorkflow.java
@@ -3,6 +3,7 @@ package net.chrisrichardson.eventstore.javaexamples.banking.backend.queryside.ac
 import io.eventuate.DispatchedEvent;
 import io.eventuate.EventHandlerMethod;
 import io.eventuate.EventSubscriber;
+import io.eventuate.Int128;
 import net.chrisrichardson.eventstore.javaexamples.banking.backend.common.accounts.*;
 import net.chrisrichardson.eventstore.javaexamples.banking.backend.common.transactions.CreditRecordedEvent;
 import net.chrisrichardson.eventstore.javaexamples.banking.backend.common.transactions.DebitRecordedEvent;
@@ -34,7 +35,7 @@ public class AccountQueryWorkflow {
   public void create(DispatchedEvent<AccountOpenedEvent> de) {
     AccountOpenedEvent event = de.getEvent();
     String id = de.getEntityId();
-    String eventId = de.getEventId().asString();
+    Int128 eventId = de.getEventId();
     logger.info("**************** account version=" + id + ", " + eventId);
     BigDecimal initialBalance = event.getInitialBalance();
 
@@ -57,8 +58,8 @@ public class AccountQueryWorkflow {
     String moneyTransferId = de.getEntityId();
     String fromAccountId = de.getEvent().getDetails().getFromAccountId();
     String toAccountId = de.getEvent().getDetails().getToAccountId();
-    logger.info("**************** account version=" + fromAccountId + ", " + de.getEventId().asString());
-    logger.info("**************** account version=" + toAccountId + ", " + de.getEventId().asString());
+    logger.info("**************** account version=" + fromAccountId + ", " + eventId);
+    logger.info("**************** account version=" + toAccountId + ", " + eventId);
 
     AccountTransactionInfo ti = new AccountTransactionInfo(moneyTransferId,
             fromAccountId,
diff --git a/java-spring/accounts-query-side-backend/src/test/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountInfoUpdateServiceTest.java b/java-spring/accounts-query-side-backend/src/test/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountInfoUpdateServiceTest.java
index 4a11089..220b97f 100644
--- a/java-spring/accounts-query-side-backend/src/test/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountInfoUpdateServiceTest.java
+++ b/java-spring/accounts-query-side-backend/src/test/java/net/chrisrichardson/eventstore/javaexamples/banking/backend/queryside/accounts/AccountInfoUpdateServiceTest.java
@@ -1,5 +1,6 @@
 package net.chrisrichardson.eventstore.javaexamples.banking.backend.queryside.accounts;
 
+import io.eventuate.Int128;
 import io.eventuate.javaclient.spring.jdbc.EventuateJdbcEventStoreConfiguration;
 import io.eventuate.javaclient.spring.jdbc.IdGenerator;
 import io.eventuate.javaclient.spring.jdbc.IdGeneratorImpl;
@@ -46,7 +47,7 @@ public class AccountInfoUpdateServiceTest {
     IdGenerator x = new IdGeneratorImpl();
     String accountId = x.genId().asString();
     String customerId = x.genId().asString();
-    String version = x.genId().asString();
+    Int128 version = x.genId();
 
     String title = "Checking account";
     BigDecimal initialBalance = new BigDecimal("1345");
@@ -63,7 +64,7 @@ public class AccountInfoUpdateServiceTest {
     assertEquals(initialBalance.longValue() * 100, accountInfo.getBalance());
     assertEquals(1, accountInfo.getChanges().size());
     assertTrue(accountInfo.getTransactions().isEmpty());
-    assertEquals(version, accountInfo.getVersion());
+    assertEquals(version.asString(), accountInfo.getVersion());
 
 
     String changeId = x.genId().asString();
@@ -99,7 +100,7 @@ public class AccountInfoUpdateServiceTest {
     IdGenerator x = new IdGeneratorImpl();
     String accountId = x.genId().asString();
     String customerId = x.genId().asString();
-    String version = x.genId().asString();
+    Int128 version = x.genId();
 
     String title = "Checking account";
     BigDecimal initialBalance = new BigDecimal("1345");
@@ -114,7 +115,7 @@ public class AccountInfoUpdateServiceTest {
     IdGenerator x = new IdGeneratorImpl();
     String accountId = x.genId().asString();
     String customerId = x.genId().asString();
-    String version = x.genId().asString();
+    Int128 version = x.genId();
 
     String title = "Checking account";
     BigDecimal initialBalance = new BigDecimal("1345");
diff --git a/java-spring/gradle.properties b/java-spring/gradle.properties
index e93b4ed..9aa239b 100644
--- a/java-spring/gradle.properties
+++ b/java-spring/gradle.properties
@@ -5,5 +5,5 @@ eventuateMavenRepoUrl=http://mavenrepo.eventuate.io/release
 
 springBootVersion=1.3.5.RELEASE
 
-eventuateClientVersion=0.10.0.RELEASE
+eventuateClientVersion=0.12.0.RELEASE
 eventuateLocalVersion=0.4.0.RELEASE