diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1d36a869..09c0483f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@
 
 ### Improvements
 - getPixel method and endpoint now returns rawer values ([#1155](../../pull/1155))
+- Allow more sophisticated filtering on item lists from the Girder client ([#1157](../../pull/1157))
+
+### Bug Fixes
+- The deepzoom tile source misreported the format of its tile output ([#1158](../../pull/1158))
 
 ## 1.20.6
 
diff --git a/sources/deepzoom/large_image_source_deepzoom/__init__.py b/sources/deepzoom/large_image_source_deepzoom/__init__.py
index 5f9e6268f..762a1c4aa 100644
--- a/sources/deepzoom/large_image_source_deepzoom/__init__.py
+++ b/sources/deepzoom/large_image_source_deepzoom/__init__.py
@@ -8,7 +8,7 @@
 import PIL.Image
 
 from large_image.cache_util import LruCacheMetaclass, methodcache
-from large_image.constants import TILE_FORMAT_NUMPY, SourcePriority
+from large_image.constants import TILE_FORMAT_PIL, SourcePriority
 from large_image.exceptions import TileSourceError, TileSourceFileNotFoundError
 from large_image.tilesource import FileTileSource, etreeToDict
 
@@ -113,7 +113,7 @@ def getTile(self, x, y, z, pilImageAllowed=False, numpyAllowed=False, **kwargs):
             overlap if x else 0, overlap if y else 0,
             self.tileWidth + (overlap if x else 0),
             self.tileHeight + (overlap if y else 0)))
-        return self._outputTile(tile, TILE_FORMAT_NUMPY, x, y, z,
+        return self._outputTile(tile, TILE_FORMAT_PIL, x, y, z,
                                 pilImageAllowed, numpyAllowed, **kwargs)