diff --git a/httpclient/src/main/java/org/apache/http/client/entity/DecompressingEntity.java b/httpclient/src/main/java/org/apache/http/client/entity/DecompressingEntity.java
index 4107ddd5a..94da3ce59 100644
--- a/httpclient/src/main/java/org/apache/http/client/entity/DecompressingEntity.java
+++ b/httpclient/src/main/java/org/apache/http/client/entity/DecompressingEntity.java
@@ -34,6 +34,8 @@ import org.apache.http.entity.HttpEntityWrapper;
 
 /**
  * Common base class for decompressing {@link HttpEntity} implementations.
+ * 
+ * @since 4.1
  */
 abstract class DecompressingEntity extends HttpEntityWrapper {
 
diff --git a/httpclient/src/main/java/org/apache/http/client/entity/DeflateDecompressingEntity.java b/httpclient/src/main/java/org/apache/http/client/entity/DeflateDecompressingEntity.java
index 79fee1a5b..ed7ba928a 100644
--- a/httpclient/src/main/java/org/apache/http/client/entity/DeflateDecompressingEntity.java
+++ b/httpclient/src/main/java/org/apache/http/client/entity/DeflateDecompressingEntity.java
@@ -44,6 +44,10 @@ import org.apache.http.entity.HttpEntityWrapper;
  * confusing that <code>deflate</code> in HTTP 1.1 means <code>zlib</code> streams rather than 
  * <code>deflate</code> streams. We handle both types in here, since that's what is seen on the 
  * internet. Moral - prefer <code>gzip</code>!
+ * 
+ * @see GzipDecompressingEntity
+ * 
+ * @since 4.1
  */
 public class DeflateDecompressingEntity extends DecompressingEntity {
 
diff --git a/httpclient/src/main/java/org/apache/http/client/entity/GzipDecompressingEntity.java b/httpclient/src/main/java/org/apache/http/client/entity/GzipDecompressingEntity.java
index 2c9dd1e7f..2c8256360 100644
--- a/httpclient/src/main/java/org/apache/http/client/entity/GzipDecompressingEntity.java
+++ b/httpclient/src/main/java/org/apache/http/client/entity/GzipDecompressingEntity.java
@@ -35,6 +35,8 @@ import org.apache.http.entity.HttpEntityWrapper;
 
 /**
  * {@link HttpEntityWrapper} for handling gzip Content Coded responses.
+ * 
+ * @since 4.1
  */
 public class GzipDecompressingEntity extends DecompressingEntity {