diff --git a/swh/loader/package/pypi/loader.py b/swh/loader/package/pypi/loader.py
--- a/swh/loader/package/pypi/loader.py
+++ b/swh/loader/package/pypi/loader.py
@@ -109,8 +109,12 @@
     def get_package_info(self, version: str) -> Iterator[Tuple[str, PyPIPackageInfo]]:
         res = []
         for meta in self.info()["releases"][version]:
-            if meta["packagetype"] != "sdist":
+            # process only standard sdist archives
+            if meta["packagetype"] != "sdist" or meta["filename"].lower().endswith(
+                (".deb", ".egg", ".rpm", ".whl")
+            ):
                 continue
+
             p_info = PyPIPackageInfo.from_metadata(meta)
             res.append((version, p_info))
 
diff --git a/swh/loader/package/pypi/tests/test_pypi.py b/swh/loader/package/pypi/tests/test_pypi.py
--- a/swh/loader/package/pypi/tests/test_pypi.py
+++ b/swh/loader/package/pypi/tests/test_pypi.py
@@ -848,3 +848,40 @@
 
     # without comment_text and version in PKG-INFO, message should be empty
     assert revision.message == b""
+
+
+def test_filter_out_invalid_sdists(swh_storage, requests_mock):
+    project_name = "swh-test-sdist-filtering"
+    version = "1.0.0"
+    url = f"https://pypi.org/project/{project_name}"
+    json_url = f"https://pypi.org/pypi/{project_name}/json"
+
+    common_sdist_entries = {
+        "url": "",
+        "comment_text": "",
+        "digests": {"sha256": ""},
+        "upload_time": "",
+        "packagetype": "sdist",
+    }
+
+    requests_mock.get(
+        json_url,
+        json={
+            "releases": {
+                version: [
+                    {
+                        **common_sdist_entries,
+                        "filename": f"{project_name}-{version}.{ext}",
+                    }
+                    for ext in ("tar.gz", "deb", "egg", "rpm", "whl")
+                ]
+            },
+        },
+    )
+
+    loader = PyPILoader(swh_storage, url)
+
+    packages = list(loader.get_package_info(version=version))
+
+    assert len(packages) == 1
+    assert packages[0][1].filename.endswith(".tar.gz")