diff --git a/fixtures/geotiff-test-data b/fixtures/geotiff-test-data
index 45d222f..ee231aa 160000
--- a/fixtures/geotiff-test-data
+++ b/fixtures/geotiff-test-data
@@ -1 +1 @@
-Subproject commit 45d222fabcef6bf49e85abde82f4438410f6dd92
+Subproject commit ee231aa8e99a433987c40da96806d446d59437c4
diff --git a/tests/image_list.py b/tests/image_list.py
index 3b1ced0..b3b9a0b 100644
--- a/tests/image_list.py
+++ b/tests/image_list.py
@@ -11,6 +11,7 @@
     ("rasterio", "uint8_rgb_deflate_block64_cog"),
     ("rasterio", "uint8_rgb_webp_block64_cog"),
     ("rasterio", "uint8_rgba_webp_block64_cog"),
+    ("rasterio", "uint8_nonrgb_deflate_block64_cog"),
     ("umbra", "sydney_airport_GEC"),
 ]
 """All fixtures that have overviews where the data can be compared with rasterio."""