diff --git a/CHANGELOG.md b/CHANGELOG.md
index 298f212a7..07cfe7504 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 ## Unreleased
 
 ### Features
-- Deepzoom tile source (#641)
+- Deepzoom tile source (#641, #647)
 
 ### Bug Fixes
 - Harden tile source detection (#644)
diff --git a/setup.py b/setup.py
index d04da4888..539bb7a78 100644
--- a/setup.py
+++ b/setup.py
@@ -11,8 +11,9 @@
     'memcached': ['pylibmc>=1.5.1'] if platform.system() != 'Windows' else [],
 }
 sources = {
-    'dummy': ['large-image-source-dummy'],
     'bioformats': ['large-image-source-bioformats'],
+    'deepzoom': ['large-image-source-deepzoom'],
+    'dummy': ['large-image-source-dummy'],
     'gdal': ['large-image-source-gdal'],
     'mapnik': ['large-image-source-mapnik'],
     'nd2': ['large-image-source-nd2'],
@@ -20,8 +21,8 @@
     'openjpeg': ['large-image-source-openjpeg'],
     'openslide': ['large-image-source-openslide'],
     'pil': ['large-image-source-pil'],
-    'tiff': ['large-image-source-tiff'],
     'test': ['large-image-source-test'],
+    'tiff': ['large-image-source-tiff'],
 }
 extraReqs.update(sources)
 extraReqs['sources'] = list(set(itertools.chain.from_iterable(sources.values())))