diff --git a/src/Node/Variable/VariableWrite.php b/src/Node/Variable/VariableWrite.php
index 2efcb502a1b..7cb13e68c42 100644
--- a/src/Node/Variable/VariableWrite.php
+++ b/src/Node/Variable/VariableWrite.php
@@ -9,6 +9,8 @@
  *
  * Immutable. Whether the written value was read afterwards is not a property
  * of the write - it is answered by VariableWritesNode::isRead().
+ *
+ * @api
  */
 final class VariableWrite
 {
diff --git a/src/Node/VariableWritesNode.php b/src/Node/VariableWritesNode.php
index ea21dc84dfd..ddf52f4486a 100644
--- a/src/Node/VariableWritesNode.php
+++ b/src/Node/VariableWritesNode.php
@@ -18,6 +18,8 @@
  * Emitted right after the body's ReturnStatementsNode, with the scope inside
  * the function-like. Arrow functions have no node of their own - their writes
  * belong to the enclosing function-like.
+ *
+ * @api
  */
 final class VariableWritesNode extends NodeAbstract implements VirtualNode
 {