diff --git a/morgan/__init__.py b/morgan/__init__.py
index 755fed9..2cf6a33 100644
--- a/morgan/__init__.py
+++ b/morgan/__init__.py
@@ -44,6 +44,7 @@ def __init__(self, args: argparse.Namespace):
         self.index_path = args.index_path
         self.index_url = args.index_url
         self.mirror_all_versions: bool = args.mirror_all_versions
+        self.package_type_regex: str = args.package_type_regex
         self.config = configparser.ConfigParser()
         self.config.read(args.config)
         self.envs = {}
@@ -201,9 +202,10 @@ def _filter_files(
         files: Iterable[dict],
     ) -> Iterable[dict]:
         # remove files with unsupported extensions
+        pattern: str = rf"\.{self.package_type_regex}$"
         files = list(
             filter(
-                lambda file: re.search(r"\.(whl|zip|tar.gz)$", file["filename"]), files
+                lambda file: re.search(pattern, file["filename"]), files
             )
         )
 
@@ -574,6 +576,13 @@ def my_url(arg):
             "Transitive dependencies still mirror only the latest matching release. "
             "(Default: only the latest matching release)"
         ),
+    ),
+    parser.add_argument(
+        "--package-type-regex",
+        dest="package_type_regex",
+        default=r"(whl|zip|tar\.gz)",
+        type=str,
+        help="Regular expression to filter which package file types are mirrored",
     )
 
     server.add_arguments(parser)
diff --git a/tests/test_init.py b/tests/test_init.py
index 7a164c6..96d89b7 100644
--- a/tests/test_init.py
+++ b/tests/test_init.py
@@ -87,6 +87,7 @@ def test_mirrorer_initialization(self, temp_index_path):
             index_url="https://pypi.org/simple/",
             config=os.path.join(temp_index_path, "morgan.ini"),
             mirror_all_versions=False,
+            package_type_regex="(whl|zip|tar.gz)",
         )
 
         mirrorer = Mirrorer(args)
@@ -105,6 +106,7 @@ def test_server_file_copying(self, temp_index_path):
             index_url=PYPI_ADDRESS,
             config=os.path.join(temp_index_path, "morgan.ini"),
             mirror_all_versions=False,
+            package_type_regex="(whl|zip|tar.gz)",
         )
         mirrorer = Mirrorer(args)
 
@@ -128,6 +130,7 @@ def test_file_hashing(self, temp_index_path):
             index_url=PYPI_ADDRESS,
             config=os.path.join(temp_index_path, "morgan.ini"),
             mirror_all_versions=False,
+            package_type_regex="(whl|zip|tar.gz)",
         )
         mirrorer = Mirrorer(args)
 
@@ -176,6 +179,7 @@ def _make_mirrorer(mirror_all_versions):
                 index_url="https://example.com/simple",
                 config=os.path.join(temp_index_path, "morgan.ini"),
                 mirror_all_versions=mirror_all_versions,
+                package_type_regex=r"(whl|zip|tar\.gz)"
             )
             return Mirrorer(args)
 
@@ -223,7 +227,9 @@ def test_filter_files_with_all_versions_mirrored(
         self, make_mirrorer, sample_files, version_spec, expected_versions
     ):
         """Test that file filtering correctly handles different version specifications."""
-        mirrorer = make_mirrorer(mirror_all_versions=True)
+        mirrorer = make_mirrorer(
+            mirror_all_versions=True,
+            )
         requirement = packaging.requirements.Requirement(
             f"sample_package{version_spec}"
         )