diff --git a/META-INF/MANIFEST.MF b/META-INF/MANIFEST.MF
index a7ac9a5a..146a18fe 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: 1.8.4
+Bundle-Version: 1.8.5
 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 00ed3caa..8191254a 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,12 @@ 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 1.8.5 (September 26, 2017)
+* Only advance the shard iterator for the accepted response.  
+  This fixes a race condition in the `KinesisDataFetcher` when it's being used to make asynchronous requests.  The shard iterator is now only advanced when the retriever calls `DataFetcherResult#accept()`.
+  * [PR #230](https://github.com/awslabs/amazon-kinesis-client/pull/230)
+  * [Issue #231](https://github.com/awslabs/amazon-kinesis-client/issues/231)
+
 ### Release 1.8.4 (September 22, 2017)
 * Create a new completion service for each request.  
   This ensures that canceled tasks are discarded.  This will prevent a cancellation exception causing issues processing records.
diff --git a/pom.xml b/pom.xml
index 66006321..895c6542 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>1.8.5-SNAPSHOT</version>
+  <version>1.8.5</version>
   <description>The Amazon Kinesis Client Library for Java enables Java developers to easily consume and process data
     from Amazon Kinesis.
   </description>
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 4620bfe4..7d6dac5a 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
@@ -126,7 +126,7 @@ 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-1.8.4";
+    public static final String KINESIS_CLIENT_LIB_USER_AGENT = "amazon-kinesis-client-library-java-1.8.5";
 
     /**
      * KCL will validate client provided sequence numbers with a call to Amazon Kinesis before checkpointing for calls