diff --git a/tests/test_data/tilesets/image/expected.py b/tests/test_data/tilesets/image/expected.py
index 9ad94d3..29b1cfc 100644
--- a/tests/test_data/tilesets/image/expected.py
+++ b/tests/test_data/tilesets/image/expected.py
@@ -15,4 +15,5 @@ EXPECTED = tileset.TileSet(
     tile_height=32,
     tile_width=32,
     version=1.2,
+    type="tileset",
 )
diff --git a/tests/test_data/tilesets/image_background_color/expected.py b/tests/test_data/tilesets/image_background_color/expected.py
index 458435b..23b0cee 100644
--- a/tests/test_data/tilesets/image_background_color/expected.py
+++ b/tests/test_data/tilesets/image_background_color/expected.py
@@ -17,4 +17,5 @@ EXPECTED = tileset.TileSet(
     tile_width=32,
     version=1.2,
     background_color=Color("#5500ff"),
+    type="tileset",
 )
diff --git a/tests/test_data/tilesets/image_grid/expected.py b/tests/test_data/tilesets/image_grid/expected.py
index efc9ef5..948bc13 100644
--- a/tests/test_data/tilesets/image_grid/expected.py
+++ b/tests/test_data/tilesets/image_grid/expected.py
@@ -16,4 +16,5 @@ EXPECTED = tileset.TileSet(
     tile_width=32,
     version=1.2,
     grid=tileset.Grid(orientation="isometric", width=32, height=32),
+    type="tileset",
 )
diff --git a/tests/test_data/tilesets/image_properties/expected.py b/tests/test_data/tilesets/image_properties/expected.py
index 98013d9..ab6aa5a 100644
--- a/tests/test_data/tilesets/image_properties/expected.py
+++ b/tests/test_data/tilesets/image_properties/expected.py
@@ -23,4 +23,5 @@ EXPECTED = tileset.TileSet(
         "int property": 5,
         "string property": "testing",
     },
+    type="tileset",
 )
diff --git a/tests/test_data/tilesets/image_tile_offset/expected.py b/tests/test_data/tilesets/image_tile_offset/expected.py
index 78a36bf..2ac339c 100644
--- a/tests/test_data/tilesets/image_tile_offset/expected.py
+++ b/tests/test_data/tilesets/image_tile_offset/expected.py
@@ -17,4 +17,5 @@ EXPECTED = tileset.TileSet(
     tile_width=32,
     version=1.2,
     tile_offset=OrderedPair(3, 5),
+    type="tileset",
 )
diff --git a/tests/test_data/tilesets/image_transparent_color/expected.py b/tests/test_data/tilesets/image_transparent_color/expected.py
index 7fa5bd3..56a45ea 100644
--- a/tests/test_data/tilesets/image_transparent_color/expected.py
+++ b/tests/test_data/tilesets/image_transparent_color/expected.py
@@ -17,4 +17,5 @@ EXPECTED = tileset.TileSet(
     tile_width=32,
     version=1.2,
     transparent_color=Color("#ff00ff"),
+    type="tileset",
 )