diff --git a/pytest.ini b/pytest.ini
index 8a0f512df..d64e30334 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,2 +1,4 @@
 [pytest]
-DJANGO_SETTINGS_MODULE = vulnerablecode.settings
\ No newline at end of file
+DJANGO_SETTINGS_MODULE = vulnerablecode.settings
+markers =
+    webtest
\ No newline at end of file
diff --git a/vulnerabilities/importers/apache_httpd.py b/vulnerabilities/importers/apache_httpd.py
index 09c64f34c..ffb5288bf 100644
--- a/vulnerabilities/importers/apache_httpd.py
+++ b/vulnerabilities/importers/apache_httpd.py
@@ -37,7 +37,6 @@
 from vulnerabilities.data_source import VulnerabilitySeverity
 from vulnerabilities.package_managers import GitHubTagsAPI
 from vulnerabilities.severity_systems import scoring_systems
-from vulnerabilities.helpers import create_etag
 from vulnerabilities.helpers import nearest_patched_package
 
 
@@ -106,7 +105,7 @@ def to_advisory(self, data):
             fixed_packages.extend(
                 [
                     PackageURL(type="apache", name="httpd", version=version)
-                    for version in self.version_api.get("apache/httpd")["valid"]
+                    for version in self.version_api.get("apache/httpd").valid_versions
                     if MavenVersion(version) in version_range
                 ]
             )
@@ -115,7 +114,7 @@ def to_advisory(self, data):
             affected_packages.extend(
                 [
                     PackageURL(type="apache", name="httpd", version=version)
-                    for version in self.version_api.get("apache/httpd")["valid"]
+                    for version in self.version_api.get("apache/httpd").valid_versions
                     if MavenVersion(version) in version_range
                 ]
             )
diff --git a/vulnerabilities/importers/apache_kafka.py b/vulnerabilities/importers/apache_kafka.py
index d0e8f7d7e..3f30d340a 100644
--- a/vulnerabilities/importers/apache_kafka.py
+++ b/vulnerabilities/importers/apache_kafka.py
@@ -72,7 +72,7 @@ def to_advisory(self, advisory_page):
 
             fixed_packages = [
                 PackageURL(type="apache", name="kafka", version=version)
-                for version in self.version_api.get("apache/kafka")["valid"]
+                for version in self.version_api.get("apache/kafka").valid_versions
                 if any(
                     [
                         MavenVersion(version) in version_range
@@ -83,7 +83,7 @@ def to_advisory(self, advisory_page):
 
             affected_packages = [
                 PackageURL(type="apache", name="kafka", version=version)
-                for version in self.version_api.get("apache/kafka")["valid"]
+                for version in self.version_api.get("apache/kafka").valid_versions
                 if any(
                     [
                         MavenVersion(version) in version_range
diff --git a/vulnerabilities/importers/apache_tomcat.py b/vulnerabilities/importers/apache_tomcat.py
index 3326a3bf9..6db5a7712 100644
--- a/vulnerabilities/importers/apache_tomcat.py
+++ b/vulnerabilities/importers/apache_tomcat.py
@@ -63,7 +63,7 @@ def updated_advisories(self):
 
     def fetch_pages(self):
         tomcat_major_versions = {
-            i[0] for i in self.version_api.get("org.apache.tomcat:tomcat")["valid"]
+            i[0] for i in self.version_api.get("org.apache.tomcat:tomcat").valid_versions
         }
         for version in tomcat_major_versions:
             page_url = self.base_url.format(version)
@@ -104,7 +104,9 @@ def to_advisories(self, apache_tomcat_advisory_html):
                             PackageURL(
                                 type="maven", namespace="apache", name="tomcat", version=version
                             )
-                            for version in self.version_api.get("org.apache.tomcat:tomcat")["valid"]
+                            for version in self.version_api.get(
+                                "org.apache.tomcat:tomcat"
+                            ).valid_versions
                             if MavenVersion(version) in version_range
                         ]
                     )
diff --git a/vulnerabilities/importers/elixir_security.py b/vulnerabilities/importers/elixir_security.py
index 48cda9c6a..46ef933a8 100644
--- a/vulnerabilities/importers/elixir_security.py
+++ b/vulnerabilities/importers/elixir_security.py
@@ -83,7 +83,7 @@ def get_versions_for_pkg_from_range_list(self, version_range_list, pkg_name):
 
         safe_pkg_versions = []
         vuln_pkg_versions = []
-        all_version_list = self.pkg_manager_api.get(pkg_name)["valid"]
+        all_version_list = self.pkg_manager_api.get(pkg_name).valid_versions
         if not version_range_list:
             return [], all_version_list
         version_ranges = [
diff --git a/vulnerabilities/importers/github.py b/vulnerabilities/importers/github.py
index 242b84f03..0a2c63c26 100644
--- a/vulnerabilities/importers/github.py
+++ b/vulnerabilities/importers/github.py
@@ -209,7 +209,7 @@ def process_response(self) -> List[Advisory]:
                         aff_vers, unaff_vers = self.categorize_versions(
                             self.version_api.package_type,
                             aff_range,
-                            self.version_api.get(name, until=cutoff_time)["valid"],
+                            self.version_api.get(name, until=cutoff_time).valid_versions,
                         )
                         affected_purls = [
                             PackageURL(name=pkg_name, namespace=ns, version=version, type=pkg_type)
diff --git a/vulnerabilities/importers/istio.py b/vulnerabilities/importers/istio.py
index 582187c1e..469203d25 100644
--- a/vulnerabilities/importers/istio.py
+++ b/vulnerabilities/importers/istio.py
@@ -66,7 +66,7 @@ def get_pkg_versions_from_ranges(self, version_range_list, release_date):
         """Takes a list of version ranges(affected) of a package
         as parameter and returns a tuple of safe package versions and
         vulnerable package versions"""
-        all_version = self.version_api.get("istio/istio", release_date)["valid"]
+        all_version = self.version_api.get("istio/istio", release_date).valid_versions
         safe_pkg_versions = []
         vuln_pkg_versions = []
         version_ranges = [
diff --git a/vulnerabilities/importers/nginx.py b/vulnerabilities/importers/nginx.py
index 13a572f3e..77913398a 100644
--- a/vulnerabilities/importers/nginx.py
+++ b/vulnerabilities/importers/nginx.py
@@ -53,8 +53,10 @@ def set_api(self):
 
         # For some reason nginx tags it's releases are in the form of `release-1.2.3`
         # Chop off the `release-` part here.
-        for index, version in enumerate(self.version_api.cache["nginx/nginx"]["valid"]):
-            self.version_api.cache["nginx/nginx"]["valid"][index] = version.replace("release-", "")
+        for index, version in enumerate(self.version_api.cache["nginx/nginx"].valid_versions):
+            self.version_api.cache["nginx/nginx"].valid_versions[index] = version.replace(
+                "release-", ""
+            )
 
     def updated_advisories(self):
         advisories = []
@@ -135,7 +137,7 @@ def extract_fixed_pkgs(self, vuln_info):
             )
 
         valid_versions = find_valid_versions(
-            self.version_api.get("nginx/nginx")["valid"], version_ranges
+            self.version_api.get("nginx/nginx").valid_versions, version_ranges
         )
 
         return [
@@ -172,7 +174,7 @@ def extract_vuln_pkgs(self, vuln_info):
             )
 
         valid_versions = find_valid_versions(
-            self.version_api.get("nginx/nginx")["valid"], version_ranges
+            self.version_api.get("nginx/nginx").valid_versions, version_ranges
         )
         qualifiers = {}
         if windows_only:
diff --git a/vulnerabilities/importers/npm.py b/vulnerabilities/importers/npm.py
index e66f9e5d4..e8bdf84ba 100644
--- a/vulnerabilities/importers/npm.py
+++ b/vulnerabilities/importers/npm.py
@@ -88,7 +88,7 @@ def process_file(self, file) -> List[Advisory]:
         publish_date = parse(record["updated_at"])
         publish_date.replace(tzinfo=pytz.UTC)
 
-        all_versions = self.versions.get(package_name, until=publish_date)["valid"]
+        all_versions = self.versions.get(package_name, until=publish_date).valid_versions
         aff_range = record.get("vulnerable_versions")
         if not aff_range:
             aff_range = ""
diff --git a/vulnerabilities/importers/ruby.py b/vulnerabilities/importers/ruby.py
index 0ae3ba7be..ad1e7dc59 100644
--- a/vulnerabilities/importers/ruby.py
+++ b/vulnerabilities/importers/ruby.py
@@ -103,10 +103,7 @@ def process_file(self, path) -> List[Advisory]:
 
         if not getattr(self, "pkg_manager_api", None):
             self.pkg_manager_api = RubyVersionAPI()
-        all_vers = self.pkg_manager_api.get(package_name, until=publish_time)["valid"]
-        print(
-            f"Ignored {len(self.pkg_manager_api.get(package_name,until=publish_time)['new'])} versions"
-        )
+        all_vers = self.pkg_manager_api.get(package_name, until=publish_time).valid_versions
         safe_versions, affected_versions = self.categorize_versions(all_vers, safe_version_ranges)
 
         impacted_purls = [
diff --git a/vulnerabilities/importers/rust.py b/vulnerabilities/importers/rust.py
index f781658e2..32d5f07fb 100644
--- a/vulnerabilities/importers/rust.py
+++ b/vulnerabilities/importers/rust.py
@@ -101,7 +101,7 @@ def _load_advisory(self, path: str) -> Optional[Advisory]:
             references.append(Reference(url=advisory["url"]))
 
         publish_date = parse(advisory["date"]).replace(tzinfo=pytz.UTC)
-        all_versions = self.crates_api.get(crate_name, publish_date)["valid"]
+        all_versions = self.crates_api.get(crate_name, publish_date).valid_versions
 
         # FIXME: Avoid wildcard version ranges for now.
         # See https://github.com/RustSec/advisory-db/discussions/831
diff --git a/vulnerabilities/importers/safety_db.py b/vulnerabilities/importers/safety_db.py
index 38956f708..9a83e7aa2 100755
--- a/vulnerabilities/importers/safety_db.py
+++ b/vulnerabilities/importers/safety_db.py
@@ -111,7 +111,7 @@ def updated_advisories(self) -> Set[Advisory]:
                 logger.error(e)
                 continue
 
-            all_package_versions = self.versions.get(package_name)["valid"]
+            all_package_versions = self.versions.get(package_name).valid_versions
             if not len(all_package_versions):
                 # PyPi does not have data about this package, we skip these
                 continue
diff --git a/vulnerabilities/package_managers.py b/vulnerabilities/package_managers.py
index 5b9735435..5e929cbc8 100644
--- a/vulnerabilities/package_managers.py
+++ b/vulnerabilities/package_managers.py
@@ -27,6 +27,7 @@
 from dateutil import parser
 from json import JSONDecodeError
 from typing import Mapping
+from typing import Tuple
 from typing import Set
 from datetime import datetime
 
@@ -41,19 +42,27 @@ class Version:
     release_date: datetime = None
 
 
+@dataclasses.dataclass(frozen=True)
+class VersionResponse:
+    valid_versions: Set[str] = dataclasses.field(default_factory=set)
+    newer_versions: Set[str] = dataclasses.field(default_factory=set)
+
+
+@dataclasses.dataclass(frozen=True)
 class VersionAPI:
     def __init__(self, cache: Mapping[str, Set[str]] = None):
         self.cache = cache or {}
 
     def get(self, package_name, until=None) -> Set[str]:
-        versions = {"new": set(), "valid": set()}
+        new_versions = set()
+        valid_versions = set()
         for version in self.cache.get(package_name, set()):
             if until and version.release_date and version.release_date > until:
-                versions["new"].add(version.value)
+                new_versions.add(version.value)
                 continue
-            versions["valid"].add(version.value)
+            valid_versions.add(version.value)
 
-        return versions
+        return VersionResponse(valid_versions=valid_versions, newer_versions=new_versions)
 
 
 def client_session():
diff --git a/vulnerabilities/tests/test_package_managers.py b/vulnerabilities/tests/test_package_managers.py
index 5a33f3526..994e4fbca 100644
--- a/vulnerabilities/tests/test_package_managers.py
+++ b/vulnerabilities/tests/test_package_managers.py
@@ -21,20 +21,20 @@
 #  Visit https://github.com/nexB/vulnerablecode/ for support and download.
 
 import asyncio
+import json
+import os
 from datetime import datetime
 from bs4 import BeautifulSoup
 from dateutil.tz import tzlocal
 from pytz import UTC
-import os
-import json
 from unittest import TestCase
 from unittest.mock import AsyncMock
-import xml.etree.ElementTree as ET
 
 from vulnerabilities.package_managers import ComposerVersionAPI
 from vulnerabilities.package_managers import MavenVersionAPI
 from vulnerabilities.package_managers import NugetVersionAPI
 from vulnerabilities.package_managers import Version
+from vulnerabilities.package_managers import VersionResponse
 
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 TEST_DATA = os.path.join(BASE_DIR, "test_data")
@@ -343,7 +343,7 @@ def test_extract_versions(self):
 
     def test_fetch(self):
 
-        assert self.version_api.get("typo3/cms-core") == {"valid": set(), "new": set()}
+        assert self.version_api.get("typo3/cms-core") == VersionResponse()
         client_session = MockClientSession(self.response)
         asyncio.run(self.version_api.fetch("typo3/cms-core", client_session))
         assert self.version_api.cache["typo3/cms-core"] == self.expected_versions
@@ -355,7 +355,7 @@ def setUpClass(cls):
         cls.version_api = MavenVersionAPI()
         with open(os.path.join(TEST_DATA, "maven_api", "easygcm.html"), "rb") as f:
             data = f.read()
-            cls.response = BeautifulSoup(data)
+            cls.response = BeautifulSoup(data, features="lxml")
             cls.content = data
 
     def test_artifact_url(self):
@@ -377,7 +377,7 @@ def test_extract_versions(self):
         assert expected_versions == self.version_api.extract_versions(self.response)
 
     def test_fetch(self):
-        assert self.version_api.get("org.apache:kafka") == {"new": set(), "valid": set()}
+        assert self.version_api.get("org.apache:kafka") == VersionResponse()
         expected = {
             Version(value="1.2.2", release_date=datetime(2014, 12, 22, 10, 29, tzinfo=UTC)),
             Version(value="1.3.0", release_date=datetime(2015, 3, 12, 15, 20, tzinfo=UTC)),
@@ -467,12 +467,12 @@ def test_extract_versions(self):
 
     def test_fetch(self):
 
-        assert self.version_api.get("Exfat.Ntfs") == {"new": set(), "valid": set()}
+        assert self.version_api.get("Exfat.Ntfs") == VersionResponse()
         client_session = MockClientSession(self.response)
         asyncio.run(self.version_api.fetch("Exfat.Ntfs", client_session))
-        assert self.version_api.get("Exfat.Ntfs") == {
-            "new": set(),
-            "valid": {
+        assert self.version_api.get("Exfat.Ntfs") == VersionResponse(
+            newer_versions=set(),
+            valid_versions={
                 "2.0.0",
                 "2.1.0",
                 "2.0.0-preview01",
@@ -488,7 +488,7 @@ def test_fetch(self):
                 "2.5.0",
                 "2.6.0",
             },
-        }
+        )
 
     # def test_load_to_api(self):
     #     assert self.version_api.get("Exfat.Ntfs") == set()
diff --git a/vulnerabilities/tests/test_ruby.py b/vulnerabilities/tests/test_ruby.py
index a666bc5ae..affcf8fa1 100644
--- a/vulnerabilities/tests/test_ruby.py
+++ b/vulnerabilities/tests/test_ruby.py
@@ -24,15 +24,14 @@
 import pathlib
 from unittest.mock import patch
 from unittest import TestCase
-from collections import OrderedDict
 
 from packageurl import PackageURL
 
 from vulnerabilities.importers.ruby import RubyDataSource
-from vulnerabilities.data_source import GitDataSourceConfiguration
 from vulnerabilities.data_source import Advisory
 from vulnerabilities.data_source import Reference
 from vulnerabilities.package_managers import RubyVersionAPI
+from vulnerabilities.package_managers import VersionResponse
 from vulnerabilities.helpers import AffectedPackage
 
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
@@ -55,7 +54,9 @@ def setUpClass(cls):
 
     @patch(
         "vulnerabilities.package_managers.RubyVersionAPI.get",
-        return_value={"valid": {"1.0.0", "1.8.0", "2.0.3"}, "new": {}},
+        return_value=VersionResponse(
+            valid_versions={"1.0.0", "1.8.0", "2.0.3"}, newer_versions=set()
+        ),
     )
     def test_process_file(self, mock_write):
         expected_advisories = [
diff --git a/vulnerabilities/tests/test_rust.py b/vulnerabilities/tests/test_rust.py
index 7a28150b8..9ec34c7b1 100644
--- a/vulnerabilities/tests/test_rust.py
+++ b/vulnerabilities/tests/test_rust.py
@@ -50,7 +50,7 @@
 
 
 def test_categorize_versions():
-    flatbuffers_versions = MOCKED_CRATES_API_VERSIONS.get("flatbuffers")["valid"]
+    flatbuffers_versions = MOCKED_CRATES_API_VERSIONS.get("flatbuffers").valid_versions
 
     unaffected_ranges = [VersionSpecifier.from_scheme_version_spec_string("semver", "< 0.4.0")]
     affected_ranges = [