diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/FileTreeEntry.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/FileTreeEntry.java
index 6811417ee..9c689440b 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/FileTreeEntry.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/FileTreeEntry.java
@@ -54,6 +54,8 @@ import java.io.IOException;
  * To lookup information about multiple paths at once, use a
  * {@link org.eclipse.jgit.treewalk.TreeWalk} and obtain the current entry's
  * information from its getter methods.
+ * @noreference This class is not intended to be referenced by clients.
+ * @noextend This class is not intended to be subclassed by clients.
  */
 @Deprecated
 public class FileTreeEntry extends TreeEntry {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/GitlinkTreeEntry.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/GitlinkTreeEntry.java
index 936fd82bf..f42f7a221 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/GitlinkTreeEntry.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/GitlinkTreeEntry.java
@@ -55,6 +55,8 @@ package org.eclipse.jgit.lib;
  * To lookup information about multiple paths at once, use a
  * {@link org.eclipse.jgit.treewalk.TreeWalk} and obtain the current entry's
  * information from its getter methods.
+ * @noreference This class is not intended to be referenced by clients.
+ * @noextend This class is not intended to be subclassed by clients.
  */
 @Deprecated
 public class GitlinkTreeEntry extends TreeEntry {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/SymlinkTreeEntry.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/SymlinkTreeEntry.java
index c7e41bce0..5ff83260d 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/SymlinkTreeEntry.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/SymlinkTreeEntry.java
@@ -54,6 +54,8 @@ package org.eclipse.jgit.lib;
  * To lookup information about multiple paths at once, use a
  * {@link org.eclipse.jgit.treewalk.TreeWalk} and obtain the current entry's
  * information from its getter methods.
+ * @noreference This class is not intended to be referenced by clients.
+ * @noextend This class is not intended to be subclassed by clients.
  */
 @Deprecated
 public class SymlinkTreeEntry extends TreeEntry {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Tree.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Tree.java
index 43bd489dc..94d14401d 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Tree.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Tree.java
@@ -63,6 +63,8 @@ import org.eclipse.jgit.util.RawParseUtils;
  * To lookup information about multiple paths at once, use a
  * {@link org.eclipse.jgit.treewalk.TreeWalk} and obtain the current entry's
  * information from its getter methods.
+ * @noreference This class is not intended to be referenced by clients.
+ * @noextend This class is not intended to be subclassed by clients.
  */
 @Deprecated
 public class Tree extends TreeEntry {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/TreeEntry.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/TreeEntry.java
index a1ffa6805..83be44cf3 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/TreeEntry.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/TreeEntry.java
@@ -56,6 +56,8 @@ import org.eclipse.jgit.util.RawParseUtils;
  * To lookup information about multiple paths at once, use a
  * {@link org.eclipse.jgit.treewalk.TreeWalk} and obtain the current entry's
  * information from its getter methods.
+ * @noreference This class is not intended to be referenced by clients.
+ * @noextend This class is not intended to be subclassed by clients.
  */
 @Deprecated
 public abstract class TreeEntry implements Comparable {