diff --git a/README.md b/README.md
index f63e578..2fb91e2 100644
--- a/README.md
+++ b/README.md
@@ -400,6 +400,11 @@ A simple setup would be
 
 ## Changelog
 
+### v0.5.7
+- Fixed arg readout if no argument is passed to CLI. [Issue 39](https://github.com/samapriya/porder/issues/39).
+- Updated requirements to include DateTimeRange
+- Fixed issue with GDAL~=3 requirement for fiona 1.8.11 release
+
 ### v0.5.6
 - Merged [pull request 38](https://github.com/samapriya/porder/pull/38) to allow for nested delivery of zip files to cloud storage.
 - Added an order state list tool.
diff --git a/dist/porder-0.5.6.tar.gz b/dist/porder-0.5.6.tar.gz
deleted file mode 100644
index 5358adc..0000000
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diff --git a/dist/porder-0.5.6-py2.py3-none-any.whl b/dist/porder-0.5.7-py2.py3-none-any.whl
similarity index 59%
rename from dist/porder-0.5.6-py2.py3-none-any.whl
rename to dist/porder-0.5.7-py2.py3-none-any.whl
index 0e9f734..eddb0a2 100644
Binary files a/dist/porder-0.5.6-py2.py3-none-any.whl and b/dist/porder-0.5.7-py2.py3-none-any.whl differ
diff --git a/dist/porder-0.5.7.tar.gz b/dist/porder-0.5.7.tar.gz
new file mode 100644
index 0000000..e388af0
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diff --git a/porder/__init__.py b/porder/__init__.py
index 0011cc0..9eac395 100644
--- a/porder/__init__.py
+++ b/porder/__init__.py
@@ -2,4 +2,4 @@
 
 __author__ = 'Samapriya Roy'
 __email__ = 'samapriya.roy@gmail.com'
-__version__ = '0.5.6'
+__version__ = '0.5.7'
diff --git a/porder/porder.py b/porder/porder.py
index ad3c17e..dfa0cb1 100644
--- a/porder/porder.py
+++ b/porder/porder.py
@@ -50,7 +50,7 @@
     try:
         import gdal
     except ImportError:
-        subprocess.call('pipwin install gdal==2.4.1', shell=True)
+        subprocess.call('pipwin install gdal', shell=True)
     except Exception as e:
         print(e)
     try:
@@ -447,7 +447,11 @@ def main(args=None):
     parser_multiproc.set_defaults(func=multiproc_from_parser)
     args = parser.parse_args()
 
-    args.func(args)
+    try:
+        func = args.func
+    except AttributeError:
+        parser.error("too few arguments")
+    func(args)
 
 if __name__ == '__main__':
     main()
diff --git a/requirements.txt b/requirements.txt
index b880814..56cfa4d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@ Shapely>=1.6.4.post1
 requests>=2.19.1
 planet>=1.2.3
 progressbar2>=3.38.0
+DateTimeRange>=0.6.1
 pySmartDL>=1.2.5
 clipboard>=0.0.4
 retrying>=1.3.3
diff --git a/setup.py b/setup.py
index b84993e..0376756 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@ def readme():
         return f.read()
 setuptools.setup(
     name='porder',
-    version='0.5.6',
+    version='0.5.7',
     packages=['porder'],
     url='https://github.com/samapriya/porder',
     package_data={'': ['bundles.json']},
@@ -28,9 +28,10 @@ def readme():
                       'progressbar2>=3.38.0',
                       'visvalingamwyatt>=0.1.2',
                       'pendulum>=2.0.4',
+                      'DateTimeRange>=0.6.1',
                       'pySmartDL==1.2.5;python_version<"3.4"',
                       'pySmartDL>=1.3.1;python_version>"3.4"',
-                      'pipwin>= 0.4.5;platform_system=="Windows"',
+                      'pipwin== 0.4.5;platform_system=="Windows"',
                       'pyproj>=1.9.5.1;platform_system!="Windows"',
                       'shapely>=1.6.4;platform_system!="Windows"',
                       'fiona>=1.8.6;platform_system!="Windows"',
@@ -48,6 +49,7 @@ def readme():
         'Programming Language :: Python',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
         'Operating System :: OS Independent',
         'Topic :: Scientific/Engineering :: GIS',
     ),