diff --git a/src/main/java/org/apache/commons/logging/impl/AvalonLogger.java b/src/main/java/org/apache/commons/logging/impl/AvalonLogger.java
index 00e49f5..fc51fd6 100644
--- a/src/main/java/org/apache/commons/logging/impl/AvalonLogger.java
+++ b/src/main/java/org/apache/commons/logging/impl/AvalonLogger.java
@@ -48,7 +48,10 @@ import org.apache.commons.logging.Log;
  * commons-logging, but this never actually worked (a NullPointerException would
  * be thrown as soon as the deserialized object was used), so removing this marker
  * is not considered to be an incompatible change.
+ * 
+ * @deprecated Scheduled for removal because the Apache Avalon Project has been discontinued.
  */
+@Deprecated
 public class AvalonLogger implements Log {
 
     /** Ancestral Avalon logger. */
diff --git a/src/main/java/org/apache/commons/logging/impl/Jdk13LumberjackLogger.java b/src/main/java/org/apache/commons/logging/impl/Jdk13LumberjackLogger.java
index 3da9011..fcb0a93 100644
--- a/src/main/java/org/apache/commons/logging/impl/Jdk13LumberjackLogger.java
+++ b/src/main/java/org/apache/commons/logging/impl/Jdk13LumberjackLogger.java
@@ -33,7 +33,9 @@ import org.apache.commons.logging.Log;
  * available in SourceForge's Lumberjack for JDKs prior to 1.4.
  *
  * @since 1.1
+ * @deprecated Scheduled for removal because the Apache Avalon Project has been discontinued.
  */
+@Deprecated
 public class Jdk13LumberjackLogger implements Log, Serializable {
 
     /** Serializable version identifier. */
diff --git a/src/main/java/org/apache/commons/logging/impl/LogKitLogger.java b/src/main/java/org/apache/commons/logging/impl/LogKitLogger.java
index 5216f4c..05bf08f 100644
--- a/src/main/java/org/apache/commons/logging/impl/LogKitLogger.java
+++ b/src/main/java/org/apache/commons/logging/impl/LogKitLogger.java
@@ -30,7 +30,10 @@ import org.apache.commons.logging.Log;
  * {@code LogKit} accepts only {@code String} messages.
  * Therefore, this implementation converts object messages into strings
  * by called their {@code toString()} method before logging them.
+ * 
+ * @deprecated Scheduled for removal because the Apache Avalon Project has been discontinued.
  */
+@Deprecated
 public class LogKitLogger implements Log, Serializable {
 
     /** Serializable version identifier. */