diff --git a/doc/doxygen.conf b/doc/doxygen.conf
index b00351b28..da0c95e0a 100644
--- a/doc/doxygen.conf
+++ b/doc/doxygen.conf
@@ -2299,6 +2299,7 @@ EXPAND_AS_DEFINED      = ATTRIBUTE_ACCESSOR_DEFINE \
                          ATTRIBUTE_VALUE_IMPLEMENT_WITH_NAME \
                          NS_UNUSED_GLOBAL \
                          NS_DEPRECATED \
+                         NS_DEPRECATED_3_46 \
                          NS_DEPRECATED_3_45 \
                          NS_DEPRECATED_3_44 \
                          NS_DEPRECATED_3_43 \
diff --git a/src/core/model/deprecated.h b/src/core/model/deprecated.h
index ff88de204..0f66ab4d9 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_46
+ * Tag for things deprecated in version ns-3.46.
+ */
+#define NS_DEPRECATED_3_46(msg) NS_DEPRECATED("Deprecated in ns-3.46: " msg)
+
 /**
  * @ingroup deprecation
  * @def NS_DEPRECATED_3_45