diff --git a/CHANGELOG.md b/CHANGELOG.md
index fc59ed489..a26dbb342 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Change Log
 
+## 1.20.1
+
+### Bug Fixes
+- Fix packaging listing various source requirements  ([#1064](../../pull/1064))
+
 ## 1.20.0
 
 ### Features
diff --git a/setup.py b/setup.py
index cf9ed740a..479c892fd 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,5 @@
 import itertools
 import os
-import sys
 
 from setuptools import setup
 
@@ -45,10 +44,12 @@ def prerelease_local_scheme(version):
 sources = {
     'bioformats': [f'large-image-source-bioformats{limit_version}'],
     'deepzoom': [f'large-image-source-deepzoom{limit_version}'],
+    'dicom': [f'large-image-source-dicom{limit_version} ; python_version < "3.8"'],
     'dummy': [f'large-image-source-dummy{limit_version}'],
     'gdal': [f'large-image-source-gdal{limit_version}'],
     'mapnik': [f'large-image-source-mapnik{limit_version}'],
     'multi': [f'large-image-source-multi{limit_version}'],
+    'nd2': [f'large-image-source-nd2{limit_version} ; python_version < "3.7"'],
     'ometiff': [f'large-image-source-ometiff{limit_version}'],
     'openjpeg': [f'large-image-source-openjpeg{limit_version}'],
     'openslide': [f'large-image-source-openslide{limit_version}'],
@@ -58,14 +59,6 @@ def prerelease_local_scheme(version):
     'tifffile': [f'large-image-source-tifffile{limit_version}'],
     'vips': [f'large-image-source-vips{limit_version}'],
 }
-if sys.version_info >= (3, 7):
-    sources.update({
-        'nd2': [f'large-image-source-nd2{limit_version}'],
-    })
-if sys.version_info >= (3, 8):
-    sources.update({
-        'dicom': [f'large-image-source-dicom{limit_version}'],
-    })
 extraReqs.update(sources)
 extraReqs['sources'] = list(set(itertools.chain.from_iterable(sources.values())))
 extraReqs['all'] = list(set(itertools.chain.from_iterable(extraReqs.values())))
diff --git a/sources/vips/setup.py b/sources/vips/setup.py
index 02cfa8cdc..05ec05b51 100644
--- a/sources/vips/setup.py
+++ b/sources/vips/setup.py
@@ -23,6 +23,14 @@ def prerelease_local_scheme(version):
         return get_local_node_and_date(version)
 
 
+try:
+    from setuptools_scm import get_version
+
+    version = get_version(root='../..', local_scheme=prerelease_local_scheme)
+    limit_version = f'>={version}' if '+' not in version else ''
+except (ImportError, LookupError):
+    limit_version = ''
+
 setup(
     name='large-image-source-vips',
     use_scm_version={'root': '../..', 'local_scheme': prerelease_local_scheme,
@@ -45,7 +53,7 @@ def prerelease_local_scheme(version):
         'Programming Language :: Python :: 3.11',
     ],
     install_requires=[
-        'large-image',
+        f'large-image{limit_version}',
         'numpy',
         'packaging',
         'pyvips',