diff --git a/gson/pom.xml b/gson/pom.xml
index bbf4032a..fb65548b 100644
--- a/gson/pom.xml
+++ b/gson/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.code.gson</groupId>
   <artifactId>gson</artifactId>
   <packaging>jar</packaging>
-  <version>1.5</version>
+  <version>1.6</version>
   <inceptionYear>2008</inceptionYear>
   <name>Gson</name>
   <url>http://code.google.com/p/google-gson/</url>
diff --git a/gson/src/main/java/com/google/gson/GsonBuilder.java b/gson/src/main/java/com/google/gson/GsonBuilder.java
index b896ce8c..ecb8d8cd 100644
--- a/gson/src/main/java/com/google/gson/GsonBuilder.java
+++ b/gson/src/main/java/com/google/gson/GsonBuilder.java
@@ -429,9 +429,9 @@ public final class GsonBuilder {
    * @param typeAdapter This object must implement at least one of the {@link InstanceCreator},
    * {@link JsonSerializer}, and a {@link JsonDeserializer} interfaces.
    * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
-   * @since 1.5
+   * @since 1.6
    */
-  GsonBuilder registerTypeHierarchyAdapter(Class<?> baseType, Object typeAdapter) {
+  public GsonBuilder registerTypeHierarchyAdapter(Class<?> baseType, Object typeAdapter) {
     Preconditions.checkArgument(typeAdapter instanceof JsonSerializer<?>
     || typeAdapter instanceof JsonDeserializer<?> || typeAdapter instanceof InstanceCreator<?>);
     if (typeAdapter instanceof InstanceCreator<?>) {
diff --git a/gson/src/main/java/com/google/gson/stream/JsonReader.java b/gson/src/main/java/com/google/gson/stream/JsonReader.java
index df788c08..1a6811c4 100644
--- a/gson/src/main/java/com/google/gson/stream/JsonReader.java
+++ b/gson/src/main/java/com/google/gson/stream/JsonReader.java
@@ -179,8 +179,9 @@ import java.util.List;
  *
  * <p>Each {@code JsonReader} may be used to read a single JSON stream. Instances
  * of this class are not thread safe.
- * 
+ *
  * @author Jesse Wilson
+ * @since 1.6
  */
 public final class JsonReader implements Closeable {
 
diff --git a/gson/src/main/java/com/google/gson/stream/JsonScope.java b/gson/src/main/java/com/google/gson/stream/JsonScope.java
index 5fea655e..bb11d020 100644
--- a/gson/src/main/java/com/google/gson/stream/JsonScope.java
+++ b/gson/src/main/java/com/google/gson/stream/JsonScope.java
@@ -20,6 +20,7 @@ package com.google.gson.stream;
  * Lexical scoping elements within a JSON reader or writer.
  *
  * @author Jesse Wilson
+ * @since 1.6
  */
 enum JsonScope {
 
diff --git a/gson/src/main/java/com/google/gson/stream/JsonToken.java b/gson/src/main/java/com/google/gson/stream/JsonToken.java
index 5ab39345..144686f6 100644
--- a/gson/src/main/java/com/google/gson/stream/JsonToken.java
+++ b/gson/src/main/java/com/google/gson/stream/JsonToken.java
@@ -20,6 +20,7 @@ package com.google.gson.stream;
  * A structure, name or value type in a JSON-encoded string.
  *
  * @author Jesse Wilson
+ * @since 1.6
  */
 public enum JsonToken {
 
diff --git a/gson/src/main/java/com/google/gson/stream/JsonWriter.java b/gson/src/main/java/com/google/gson/stream/JsonWriter.java
index bace4399..dba653a1 100644
--- a/gson/src/main/java/com/google/gson/stream/JsonWriter.java
+++ b/gson/src/main/java/com/google/gson/stream/JsonWriter.java
@@ -116,8 +116,9 @@ import java.util.List;
  * <p>Each {@code JsonWriter} may be used to write a single JSON stream.
  * Instances of this class are not thread safe. Calls that would result in a
  * malformed JSON string will fail with an {@link IllegalStateException}.
- * 
+ *
  * @author Jesse Wilson
+ * @since 1.6
  */
 public final class JsonWriter implements Closeable {