diff --git a/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonFactory.java b/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonFactory.java
index 8f0b86348..817bdbb14 100644
--- a/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonFactory.java
+++ b/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonFactory.java
@@ -37,7 +37,9 @@
  *
  * @since 1.3
  * @author Yaniv Inbar
+ * @deprecated As of release 1.28, please use Jackson2 and google-http-client-jackson2.
  */
+@Deprecated
 public final class JacksonFactory extends JsonFactory {
 
   /** JSON factory. */
diff --git a/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonGenerator.java b/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonGenerator.java
index 27f8c9d34..64c0eed57 100644
--- a/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonGenerator.java
+++ b/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonGenerator.java
@@ -28,7 +28,9 @@
  * </p>
  *
  * @author Yaniv Inbar
+ * @deprecated As of release 1.28, please use Jackson2 and google-http-client-jackson2.
  */
+@Deprecated
 final class JacksonGenerator extends JsonGenerator {
   private final org.codehaus.jackson.JsonGenerator generator;
   private final JacksonFactory factory;
diff --git a/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonParser.java b/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonParser.java
index a7b3427a3..9a246d185 100644
--- a/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonParser.java
+++ b/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/JacksonParser.java
@@ -29,7 +29,9 @@
  * </p>
  *
  * @author Yaniv Inbar
+ * @deprecated As of release 1.28, please use Jackson2 and google-http-client-jackson2.
  */
+@Deprecated
 final class JacksonParser extends JsonParser {
 
   private final org.codehaus.jackson.JsonParser parser;
diff --git a/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/package-info.java b/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/package-info.java
index 28df204df..81ca7adb7 100644
--- a/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/package-info.java
+++ b/google-http-client-jackson/src/main/java/com/google/api/client/json/jackson/package-info.java
@@ -18,7 +18,7 @@
  *
  * @since 1.3
  * @author Yaniv Inbar
+ * @deprecated As of release 1.28, please use Jackson2 and google-http-client-jackson2.
  */
-
 package com.google.api.client.json.jackson;