diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..889b55b
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,197 @@
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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\ No newline at end of file
diff --git a/LICENSE.txt b/LICENSE.txt
deleted file mode 100644
index fc8e6a9..0000000
--- a/LICENSE.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-MIT License
-
-Copyright (c) 2023-present Alec Koumjian <akoumjian@gmail.com>
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/pyproject.toml b/pyproject.toml
index 5dc81d1..95eba9b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,10 +7,19 @@ authors = [
     { name = "Kathleen Kiker" }
 ]
 readme = "README.md"
-keywords = []
+license = { file = "LICENSE" }
+keywords = ["astronomy", "orbital mechanics", "propagation"]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Topic :: Scientific/Engineering :: Astronomy"
+]
 requires-python = ">=3.11,<4.0"
 dependencies = [
-    "adam-core @ git+https://github.com/B612-Asteroid-Institute/adam_core.git@ak/remove-pyoorb",
+    "adam-core>=0.2.0a1",
     "assist",
     "naif-de440",
     "numpy",