diff --git a/.coverage.subprocess b/.coverage.subprocess
new file mode 100644
index 0000000..c4484e0
--- /dev/null
+++ b/.coverage.subprocess
@@ -0,0 +1 @@
+!coverage.py: This is a private format, don't read it directly!{"lines":{"/Users/45028222/gunagala/astropy_helpers/ah_bootstrap.py":[],"/Users/45028222/gunagala/astropy_helpers/setup.py":[],"/Users/45028222/gunagala/astropy_helpers/ez_setup.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/setup_helpers.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/conftest.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/version_helpers.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/version.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/openmp_helpers.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/git_helpers.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/distutils_helpers.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/__init__.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/utils.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/tests/test_utils.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/tests/test_git_helpers.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/tests/test_setup_helpers.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/tests/__init__.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/tests/test_ah_bootstrap.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/tests/test_openmp_helpers.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/sphinx/conf.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/sphinx/__init__.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/commands/build_ext.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/commands/__init__.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/commands/test.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/commands/_dummy.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/commands/build_sphinx.py":[],"/Users/45028222/gunagala/astropy_helpers/astropy_helpers/commands/setup_package.py":[]}}
\ No newline at end of file
diff --git a/setup.cfg b/setup.cfg
index ce2c837..a5a15d2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -48,7 +48,7 @@ edit_on_github = False
 github_project = AstroHuntsman/gunagala
 # install_requires should be formatted as a comma-separated list, e.g.:
 # install_requires = astropy, scipy, matplotlib
-install_requires = astropy, pyYAML, numpy, scipy, matplotlib
+install_requires = astropy>=4.0.2, pyYAML, numpy, scipy, matplotlib
 # version should be PEP386 compatible (http://www.python.org/dev/peps/pep-0386)
 version = 0.1.dev0