diff --git a/beets/library.py b/beets/library.py
index 59791959d6..6cf30d4763 100644
--- a/beets/library.py
+++ b/beets/library.py
@@ -492,8 +492,11 @@ class Item(LibModel):
         'encoder':              types.STRING,
         'rg_track_gain':        types.NULL_FLOAT,
         'rg_track_peak':        types.NULL_FLOAT,
+        'rg_track_range':       types.NULL_FLOAT,
         'rg_album_gain':        types.NULL_FLOAT,
         'rg_album_peak':        types.NULL_FLOAT,
+        'rg_album_range':       types.NULL_FLOAT,
+        'rg_reference':         types.NULL_FLOAT,
         'r128_track_gain':      types.NullPaddedInt(6),
         'r128_album_gain':      types.NullPaddedInt(6),
         'original_year':        types.PaddedInt(4),
@@ -954,6 +957,8 @@ class Album(LibModel):
         'releasegroupdisambig': types.STRING,
         'rg_album_gain':        types.NULL_FLOAT,
         'rg_album_peak':        types.NULL_FLOAT,
+        'rg_album_range':       types.NULL_FLOAT,
+        'rg_reference':         types.NULL_FLOAT,
         'r128_album_gain':      types.NullPaddedInt(6),
         'original_year':        types.PaddedInt(4),
         'original_month':       types.PaddedInt(2),
@@ -1001,6 +1006,8 @@ class Album(LibModel):
         'releasegroupdisambig',
         'rg_album_gain',
         'rg_album_peak',
+        'rg_album_range',
+        'rg_reference',
         'r128_album_gain',
         'original_year',
         'original_month',