diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 10aea3efec2..6026e04aef9 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 6.5.0
+current_version = 6.5.1
 commit = True
 message = docs: Update version numbers from {current_version} -> {new_version}
 
diff --git a/README.md b/README.md
index 90de0166425..e20e3e8cd84 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ All the services:
 <dependency>
 	<groupId>com.ibm.watson.developer_cloud</groupId>
 	<artifactId>java-sdk</artifactId>
-	<version>6.5.0</version>
+	<version>6.5.1</version>
 </dependency>
 ```
 
@@ -70,7 +70,7 @@ Only Discovery:
 <dependency>
 	<groupId>com.ibm.watson.developer_cloud</groupId>
 	<artifactId>discovery</artifactId>
-	<version>6.5.0</version>
+	<version>6.5.1</version>
 </dependency>
 ```
 
@@ -79,13 +79,13 @@ Only Discovery:
 All the services:
 
 ```gradle
-'com.ibm.watson.developer_cloud:java-sdk:6.5.0'
+'com.ibm.watson.developer_cloud:java-sdk:6.5.1'
 ```
 
 Only Assistant:
 
 ```gradle
-'com.ibm.watson.developer_cloud:assistant:6.5.0'
+'com.ibm.watson.developer_cloud:assistant:6.5.1'
 ```
 
 ##### Development snapshots
@@ -108,7 +108,7 @@ And then reference the snapshot version on your app module gradle
 Only Speech to Text:
 
 ```gradle
-'com.ibm.watson.developer_cloud:speech-to-text:6.5.1-SNAPSHOT'
+'com.ibm.watson.developer_cloud:speech-to-text:6.5.2-SNAPSHOT'
 ```
 
 ##### JAR
@@ -375,7 +375,7 @@ Gradle:
 
 ```sh
 cd java-sdk
-gradle jar  # build jar file (build/libs/watson-developer-cloud-6.5.0.jar)
+gradle jar  # build jar file (build/libs/watson-developer-cloud-6.5.1.jar)
 gradle test # run tests
 gradle check # performs quality checks on source files and generates reports
 gradle testReport # run tests and generate the aggregated test report (build/reports/allTests)
@@ -428,4 +428,4 @@ or [Stack Overflow](http://stackoverflow.com/questions/ask?tags=ibm-watson).
 [ibm-cloud-onboarding]: http://console.bluemix.net/registration?target=/developer/watson&cm_sp=WatsonPlatform-WatsonServices-_-OnPageNavLink-IBMWatson_SDKs-_-Java
 
 
-[jar]: https://github.com/watson-developer-cloud/java-sdk/releases/download/java-sdk-6.5.0/java-sdk-6.5.0-jar-with-dependencies.jar
+[jar]: https://github.com/watson-developer-cloud/java-sdk/releases/download/java-sdk-6.5.1/java-sdk-6.5.1-jar-with-dependencies.jar
diff --git a/assistant/README.md b/assistant/README.md
index 2dd27d73c47..c0e078ea048 100644
--- a/assistant/README.md
+++ b/assistant/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>assistant</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:assistant:6.5.0'
+'com.ibm.watson.developer_cloud:assistant:6.5.1'
 ```
 
 ## Usage
diff --git a/conversation/README.md b/conversation/README.md
index 84b78bd0024..60909ef2951 100644
--- a/conversation/README.md
+++ b/conversation/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>conversation</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:conversation:6.5.0'
+'com.ibm.watson.developer_cloud:conversation:6.5.1'
 ```
 
 ## Usage
diff --git a/discovery/README.md b/discovery/README.md
index 4895e2ad53a..ace8fcd749e 100644
--- a/discovery/README.md
+++ b/discovery/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>discovery</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:discovery:6.5.0'
+'com.ibm.watson.developer_cloud:discovery:6.5.1'
 ```
 
 ## Usage
diff --git a/language-translator/README.md b/language-translator/README.md
index 46c814c682d..f30d8f2b37d 100644
--- a/language-translator/README.md
+++ b/language-translator/README.md
@@ -10,13 +10,13 @@ Language Translator v3 is now available. The v2 Language Translator API will no
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>language-translator</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:language-translator:6.5.0'
+'com.ibm.watson.developer_cloud:language-translator:6.5.1'
 ```
 
 ## Usage
diff --git a/natural-language-classifier/README.md b/natural-language-classifier/README.md
index 0d035a5db1f..fa2481eb645 100644
--- a/natural-language-classifier/README.md
+++ b/natural-language-classifier/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>natural-language-classifier</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:natural-language-classifier:6.5.0'
+'com.ibm.watson.developer_cloud:natural-language-classifier:6.5.1'
 ```
 
 ## Usage
diff --git a/natural-language-understanding/README.md b/natural-language-understanding/README.md
index 79f6cc7adc4..d7f4bc52a0c 100644
--- a/natural-language-understanding/README.md
+++ b/natural-language-understanding/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>natural-language-understanding</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:natural-language-understanding:6.5.0'
+'com.ibm.watson.developer_cloud:natural-language-understanding:6.5.1'
 ```
 
 ## Usage
diff --git a/personality-insights/README.md b/personality-insights/README.md
index df8082c4b1e..c9f0babb535 100755
--- a/personality-insights/README.md
+++ b/personality-insights/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>personality-insights</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:personality-insights:6.5.0'
+'com.ibm.watson.developer_cloud:personality-insights:6.5.1'
 ```
 
 ## Usage
diff --git a/speech-to-text/README.md b/speech-to-text/README.md
index 387253d6e57..adde6b6d0a7 100755
--- a/speech-to-text/README.md
+++ b/speech-to-text/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>speech-to-text</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:speech-to-text:6.5.0'
+'com.ibm.watson.developer_cloud:speech-to-text:6.5.1'
 ```
 
 ## Usage
diff --git a/speech-to-text/src/main/java/com/ibm/watson/developer_cloud/speech_to_text/v1/SpeechToText.java b/speech-to-text/src/main/java/com/ibm/watson/developer_cloud/speech_to_text/v1/SpeechToText.java
index 548a10e25e5..cba6b555e31 100644
--- a/speech-to-text/src/main/java/com/ibm/watson/developer_cloud/speech_to_text/v1/SpeechToText.java
+++ b/speech-to-text/src/main/java/com/ibm/watson/developer_cloud/speech_to_text/v1/SpeechToText.java
@@ -79,10 +79,8 @@
 import com.ibm.watson.developer_cloud.util.Validator;
 import okhttp3.HttpUrl;
 import okhttp3.MediaType;
-import okhttp3.MultipartBody;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
-import okhttp3.RequestBody;
 import okhttp3.WebSocket;
 
 /**
@@ -889,11 +887,7 @@ public ServiceCall<Void> addCorpus(AddCorpusOptions addCorpusOptions) {
     if (addCorpusOptions.allowOverwrite() != null) {
       builder.query("allow_overwrite", String.valueOf(addCorpusOptions.allowOverwrite()));
     }
-    MultipartBody.Builder multipartBuilder = new MultipartBody.Builder();
-    multipartBuilder.setType(MultipartBody.FORM);
-    RequestBody corpusFileBody = RequestUtils.inputStreamBody(addCorpusOptions.corpusFile(), "text/plain");
-    multipartBuilder.addFormDataPart("corpus_file", addCorpusOptions.corpusFilename(), corpusFileBody);
-    builder.body(multipartBuilder.build());
+    builder.body(RequestUtils.inputStreamBody(addCorpusOptions.corpusFile(), "text/plain"));
     return createServiceCall(builder.build(), ResponseConverterUtils.getVoid());
   }
 
diff --git a/text-to-speech/README.md b/text-to-speech/README.md
index da52c2d7e15..9d785edeec7 100755
--- a/text-to-speech/README.md
+++ b/text-to-speech/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>text-to-speech</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:text-to-speech:6.5.0'
+'com.ibm.watson.developer_cloud:text-to-speech:6.5.1'
 ```
 
 ## Usage
diff --git a/tone-analyzer/README.md b/tone-analyzer/README.md
index d81161ea32c..f11f8bd66ed 100755
--- a/tone-analyzer/README.md
+++ b/tone-analyzer/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>tone-analyzer</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:tone-analyzer:6.5.0'
+'com.ibm.watson.developer_cloud:tone-analyzer:6.5.1'
 ```
 
 ## Usage
diff --git a/visual-recognition/README.md b/visual-recognition/README.md
index da6281e9c91..9a79518a563 100644
--- a/visual-recognition/README.md
+++ b/visual-recognition/README.md
@@ -7,13 +7,13 @@
 <dependency>
   <groupId>com.ibm.watson.developer_cloud</groupId>
   <artifactId>visual-recognition</artifactId>
-  <version>6.5.0</version>
+  <version>6.5.1</version>
 </dependency>
 ```
 
 ##### Gradle
 ```gradle
-'com.ibm.watson.developer_cloud:visual-recognition:6.5.0'
+'com.ibm.watson.developer_cloud:visual-recognition:6.5.1'
 ```
 
 ## Usage