diff --git a/src/main/java/org/apache/commons/math/ConvergingAlgorithmImpl.java b/src/main/java/org/apache/commons/math/ConvergingAlgorithmImpl.java
index 4625953b8..5e9976794 100644
--- a/src/main/java/org/apache/commons/math/ConvergingAlgorithmImpl.java
+++ b/src/main/java/org/apache/commons/math/ConvergingAlgorithmImpl.java
@@ -23,6 +23,7 @@ package org.apache.commons.math;
  *
  * @version $Revision$ $Date$
  * @since 2.0
+ * @deprecated in 2.2 (to be removed in 3.0).
  */
 public abstract class ConvergingAlgorithmImpl implements ConvergingAlgorithm {