diff --git a/MANIFEST.in b/MANIFEST.in
index 88e203e9492..da8835b2c12 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,12 +3,13 @@ prune .github*
 prune ci
 prune doc*
 prune examples*
+prune pygmt/tests*
 exclude .dvcignore
 exclude .gitignore
 exclude .readthedocs.yaml
 exclude AUTHORSHIP.md
+exclude CODE_OF_CONDUCT.md
 exclude CONTRIBUTING.md
 exclude Makefile
 exclude environment.yml
 exclude requirements.txt
-exclude pygmt/tests/baseline/*.dvc
diff --git a/pyproject.toml b/pyproject.toml
index 99f50767ae3..253fb2c1160 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,6 @@ name = "pygmt"
 description = "A Python interface for the Generic Mapping Tools"
 readme = "README.rst"
 requires-python = ">=3.9"
-license = {text = "BSD License"}
 authors = [{name = "The PyGMT Developers", email = "pygmt.team@gmail.com"}]
 keywords = [
     "cartography",
@@ -56,15 +55,12 @@ changelog = "https://www.pygmt.org/latest/changes.html"
 
 [tool.setuptools]
 platforms = ["Any"]
-include-package-data = true
+license-files = ["LICENSE.txt"]
 
 [tool.setuptools.packages.find]
 include = ["pygmt*"]
 exclude = ["doc"]
 
-[tool.setuptools.package-data]
-tests = ["data/*", "baseline/*"]
-
 [tool.setuptools_scm]
 local_scheme = "node-and-date"
 fallback_version = "999.999.999+unknown"