diff --git a/META-INF/MANIFEST.MF b/META-INF/MANIFEST.MF
index 304a299ad..8c5e87b20 100644
--- a/META-INF/MANIFEST.MF
+++ b/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: Amazon Kinesis Client Library for Java
 Bundle-SymbolicName: com.amazonaws.kinesisclientlibrary;singleton:=true
-Bundle-Version: 1.6.2
+Bundle-Version: 1.6.3
 Bundle-Vendor: Amazon Technologies, Inc
 Bundle-RequiredExecutionEnvironment: JavaSE-1.7
 Require-Bundle: org.apache.commons.codec;bundle-version="1.6",
diff --git a/README.md b/README.md
index b44bb1670..ef6ac95ef 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,9 @@ For producer-side developers using the **[Kinesis Producer Library (KPL)][kinesi
 To make it easier for developers to write record processors in other languages, we have implemented a Java based daemon, called MultiLangDaemon that does all the heavy lifting. Our approach has the daemon spawn a sub-process, which in turn runs the record processor, which can be written in any language. The MultiLangDaemon process and the record processor sub-process communicate with each other over [STDIN and STDOUT using a defined protocol][multi-lang-protocol]. There will be a one to one correspondence amongst record processors, child processes, and shards. For Python developers specifically, we have abstracted these implementation details away and [expose an interface][kclpy] that enables you to focus on writing record processing logic in Python. This approach enables KCL to be language agnostic, while providing identical features and similar parallel processing model across all languages.
 
 ## Release Notes
+### Release 1.6.3 (May 12, 2016)
+* Fix format exception caused by DEBUG log in LeaseTaker [Issue # 68](https://github.com/awslabs/amazon-kinesis-client/issues/68)
+
 ### Release 1.6.2 (March 23, 2016)
 * Support for specifying max leases per worker and max leases to steal at a time.
 * Support for specifying initial DynamoDB table read and write capacity.
diff --git a/pom.xml b/pom.xml
index c5c17f85e..7fe6725fd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
     <artifactId>amazon-kinesis-client</artifactId>
     <packaging>jar</packaging>
     <name>Amazon Kinesis Client Library for Java</name>
-    <version>1.6.2</version>
+    <version>1.6.3</version>
     <description>The Amazon Kinesis Client Library for Java enables Java developers to easily consume and process data from Amazon Kinesis.</description>
     <url>https://aws.amazon.com/kinesis</url>
 
diff --git a/src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/KinesisClientLibConfiguration.java b/src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/KinesisClientLibConfiguration.java
index 510565f51..6932d24ef 100644
--- a/src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/KinesisClientLibConfiguration.java
+++ b/src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/KinesisClientLibConfiguration.java
@@ -119,7 +119,7 @@ public class KinesisClientLibConfiguration {
     /**
      * User agent set when Amazon Kinesis Client Library makes AWS requests.
      */
-    public static final String KINESIS_CLIENT_LIB_USER_AGENT = "amazon-kinesis-client-library-java-1.6.2";
+    public static final String KINESIS_CLIENT_LIB_USER_AGENT = "amazon-kinesis-client-library-java-1.6.3";
 
     /**
      * KCL will validate client provided sequence numbers with a call to Amazon Kinesis before checkpointing for calls
diff --git a/src/main/java/com/amazonaws/services/kinesis/leases/impl/LeaseTaker.java b/src/main/java/com/amazonaws/services/kinesis/leases/impl/LeaseTaker.java
index 42a3995a9..e75fd9c97 100644
--- a/src/main/java/com/amazonaws/services/kinesis/leases/impl/LeaseTaker.java
+++ b/src/main/java/com/amazonaws/services/kinesis/leases/impl/LeaseTaker.java
@@ -471,6 +471,7 @@ private List<T> chooseLeasesToSteal(Map<String, Integer> leaseCounts, int needed
                 LOG.debug(String.format("Worker %s will attempt to steal %d leases from most loaded worker %s. "
                         + " He has %d leases, target is %d, I need %d, maxLeasesToSteatAtOneTime is %d.",
                         workerIdentifier,
+                        numLeasesToSteal,
                         mostLoadedWorker.getKey(),
                         mostLoadedWorker.getValue(),
                         target,