diff --git a/src/core/model/deprecated.h b/src/core/model/deprecated.h
index fc57b888a..43caf67f2 100644
--- a/src/core/model/deprecated.h
+++ b/src/core/model/deprecated.h
@@ -83,6 +83,13 @@
  */
 #define NS_DEPRECATED(msg) /** \deprecated msg */ [[deprecated(msg)]]
 
+/**
+ * \ingroup deprecation
+ * \def NS_DEPRECATED_3_44
+ * Tag for things deprecated in version ns-3.44.
+ */
+#define NS_DEPRECATED_3_44(msg) NS_DEPRECATED("Deprecated in ns-3.44: " msg)
+
 /**
  * \ingroup deprecation
  * \def NS_DEPRECATED_3_43