diff --git a/optional-requirements.txt b/optional-requirements.txt
new file mode 100644
index 00000000..0e0e55de
--- /dev/null
+++ b/optional-requirements.txt
@@ -0,0 +1,2 @@
+openorb
+openorb-data-de405
diff --git a/pyproject.toml b/pyproject.toml
index cc0ce860..aad5ebc8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,6 +15,7 @@ classifiers = [
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Topic :: Scientific/Engineering :: Astronomy",
  ]
 urls = {documentation = "https://rubin-sim.lsst.io", repository = "https://github.com/lsst/rubin_sim" }
@@ -38,7 +39,6 @@ dependencies = [
     "shapely",
     "skyfield",
     "skyproj",
-    "pyoorb",
     "tqdm",
     "rubin-scheduler",
     "pyarrow",
diff --git a/requirements.txt b/requirements.txt
index 188bef80..6eec5649 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,8 +11,6 @@ sqlalchemy
 astropy
 pytables
 h5py
-openorb
-openorb-data-de405
 astroplan
 colorcet
 cycler