2 files changed, 3 insertions, 3 deletions
diff --git a/setup.cfg b/setup.cfg
index d396303..e179423 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -14,9 +14,9 @@ classifier =
     Topic :: Scientific/Engineering :: Astronomy
     Topic :: Software Development :: Libraries :: Python Modules
 requires-python = >=2.5
-requires-dist = 
+requires-dist =
     stsci.tools (==3.0)
-    pywcs (==1.10-4.7)
+    pywcs (>=1.10)
 
 [files]
 packages_root = lib
diff --git a/setup.py b/setup.py
index f47f563..30dc9b6 100755
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ import setuptools
 setuptools.command.easy_install.easy_install = easier_install
 
 setup(
-    setup_requires=['d2to1>=0.2.3', 'stsci.distutils>=0.2dev'],
+    setup_requires=['d2to1>=0.2.5', 'stsci.distutils==0.2'],
     d2to1=True,
     use_2to3=True,
     zip_safe=False