diff --git a/grayskull/strategy/py_base.py b/grayskull/strategy/py_base.py
index 5bc8452d4..666d153a9 100644
--- a/grayskull/strategy/py_base.py
+++ b/grayskull/strategy/py_base.py
@@ -805,6 +805,16 @@ def get_sdist_metadata(
         for key in ("name", "version", "summary", "author"):
             metadata[key] = getattr(dist, key, None)
 
+    # "packages" refer to the modules you can import
+    # That might be different from the distribution name (PKG-INFO name)
+    # packages can be retrieved from setup.py but is usually not defined
+    # in pyproject.toml
+    # For setuptools, it is possible to get it from top_level.txt
+    if "packages" not in metadata or not metadata["packages"]:
+        top_level = list(Path(temp_folder).rglob("*.egg-info/top_level.txt"))
+        if top_level:
+            metadata["packages"] = top_level[0].read_text().split()
+
     return merge_setup_toml_metadata(metadata, pyproject_metadata)
 
 
diff --git a/tests/test_py_base.py b/tests/test_py_base.py
index 3774220f1..e0b8fbf75 100644
--- a/tests/test_py_base.py
+++ b/tests/test_py_base.py
@@ -120,6 +120,38 @@ def test_get_sdist_metadata_toml_files_BLACK():
     ]
 
 
+def test_get_sdist_metadata_packages_top_level():
+    """Check that packages can be retrieved from top_level.txt"""
+    # This package only includes a pyproject.toml (no setup.py)
+    # As setuptools is used, the module name can be retrieved
+    # from top_level.txt in the sdist
+    pkg_name = "tangods-achtung"
+    pkg_name_nor = pkg_name.replace("-", "_")
+    pkg_ver = "0.11.1"
+    sdist_metadata = get_sdist_metadata(
+        f"https://pypi.io/packages/source/t/{pkg_name}/{pkg_name_nor}-{pkg_ver}.tar.gz",
+        Configuration(name=pkg_name, version=pkg_ver),
+    )
+    assert sdist_metadata["name"] == pkg_name
+    assert sdist_metadata["packages"] == ["achtung"]
+
+
+def test_get_sdist_metadata_no_top_level():
+    """Regression test when top_level.txt doesn't exist"""
+    # This package only includes a pyproject.toml (no setup.py)
+    # As hatchling is used, there is no top_level.txt file
+    pkg_name = "gidgetlab-kit"
+    pkg_name_nor = pkg_name.replace("-", "_")
+    pkg_ver = "0.7.2"
+    sdist_metadata = get_sdist_metadata(
+        f"https://pypi.io/packages/source/g/{pkg_name}/{pkg_name_nor}-{pkg_ver}.tar.gz",
+        Configuration(name=pkg_name, version=pkg_ver),
+    )
+    assert sdist_metadata["name"] == pkg_name
+    # No solution to retrieve packages for now
+    assert sdist_metadata.get("packages") is None
+
+
 def test_split_deps_without_comma():
     assert split_deps(">=1.8.0<3.0.0,!=2.0.1") == [">=1.8.0", "<3.0.0", "!=2.0.1"]