diff --git a/pyproject.toml b/pyproject.toml
index 5b731e9a5..d68046a0d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,6 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "e3sm_diags"
 dynamic = ["version"]
-version = "2.12.0"
 description = "E3SM Diagnostics"
 authors = [
   { name = "Chengzhu (Jill) Zhang", email = "zhang40@llnl.gov" },
@@ -31,13 +30,15 @@ classifiers = [
 dependencies = [
   "beautifulsoup4",
   "cartopy >=0.17.0",
-  "cartopy_offlinedata",
+  # This package is not available on PyPI.
+  # "cartopy_offlinedata",
   "cf-units",
   "dask",
   "esmpy >=8.4.0",
   "lxml",
   "mache >=0.15.0",
-  "matplotlib-base",
+  # This package is not available on PyPI.
+  # "matplotlib-base",
   "netcdf4",
   "output_viewer >=1.3.0",
   "numpy >=2.0.0,<3.0.0",
@@ -69,9 +70,8 @@ Documentation = "https://docs.e3sm.org/e3sm_diags/_build/html/main/index.html"
 e3sm_diags = "e3sm_diags.e3sm_diags_driver:main"
 e3sm_diags_vars = "e3sm_diags.e3sm_diags_vars:main"
 
-[tool.setuptools]
-packages = ["e3sm_diags", "e3sm_diags.*"]
-scripts = ["e3sm_diags/e3sm_diags_driver.py"]
+[tool.setuptools.packages.find]
+include = ["e3sm_diags", "e3sm_diags.*"]
 
 [tool.setuptools.dynamic]
 version = { attr = "e3sm_diags.__version__" }
@@ -84,6 +84,9 @@ version = { attr = "e3sm_diags.__version__" }
 ]
 
 [tool.setuptools.data-files]
+"share/e3sm_diags/acme_ne30_ocean_land_mask.nc" = [
+  "e3sm_diags/driver/acme_ne30_ocean_land_mask.nc",
+]
 "share/e3sm_diags/zonal_mean_xy" = [
   "e3sm_diags/driver/default_diags/zonal_mean_xy*",
   "e3sm_diags/driver/default_diags/legacy_diags/zonal_mean_xy*",
@@ -173,7 +176,7 @@ exclude = '''
     | config
     | conda
     | analysis_data_preprocess
- )/
+)/
 '''
 
 [tool.isort]