diff --git a/LICENSE b/LICENSE
index 26a8995..abd5008 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2018 Stephen Taylor, Paul T. Baker, Jeffrey S. Hazboun
+Copyright (c) 2021 Gabriel E. Freedman, Aaron D. Johnson
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/enterprise_outliers/__init__.py b/enterprise_outliers/__init__.py
index e69de29..5becc17 100755
--- a/enterprise_outliers/__init__.py
+++ b/enterprise_outliers/__init__.py
@@ -0,0 +1 @@
+__version__ = "1.0.0"
diff --git a/requirements.txt b/requirements.txt
index 08c7e48..36f65b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,8 @@
 numpy>=1.16.3
 scipy>=1.2.0
 Cython>=0.28.5
-numdifftools
 scikit-sparse>=0.4.5
 enterprise-pulsar>=3.1.0
-pint-pulsar
-astropy
-matplotlib
\ No newline at end of file
+pint-pulsar>=0.8.3
+matplotlib>=3.2.0
+numdifftools>=0.9.0
\ No newline at end of file
diff --git a/setup.cfg b/setup.cfg
index 4097b2b..6d71a1e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 2.1.0
+current_version = 1.0.0
 commit = True
 tag = True
 
diff --git a/setup.py b/setup.py
index 4faf425..97463b2 100644
--- a/setup.py
+++ b/setup.py
@@ -15,10 +15,9 @@
     "Cython>=0.28.5",
     "scikit-sparse>=0.4.5",
     "enterprise-pulsar>=3.1.0",
-    "pint-pulsar",
-    "astropy",
-    "matplotlib",
-    "numdifftools"
+    "pint-pulsar>=0.8.3",
+    "matplotlib>=3.2.0",
+    "numdifftools>=0.9.0"
 ]
 
 test_requirements = [