diff --git a/nvchecker/get_version.py b/nvchecker/get_version.py
index 70165bb..68ef721 100644
--- a/nvchecker/get_version.py
+++ b/nvchecker/get_version.py
@@ -15,7 +15,7 @@ handler_precedence = (
   'gems', 'pacman',
   'cmd', 'bitbucket', 'regex', 'manual', 'vcs',
   'cratesio', 'npm', 'hackage', 'cpan', 'gitlab', 'packagist',
-  'anitya', 'android_sdk',
+  'repology', 'anitya', 'android_sdk',
 )
 
 def substitute_version(version, name, conf):
diff --git a/nvchecker/source/repology.py b/nvchecker/source/repology.py
new file mode 100644
index 0000000..c602f55
--- /dev/null
+++ b/nvchecker/source/repology.py
@@ -0,0 +1,33 @@
+# MIT licensed
+# Copyright (c) 2019 lilydjwg <lilydjwg@gmail.com>, et al.
+
+import structlog
+import functools
+
+from . import session
+
+logger = structlog.get_logger(logger_name=__name__)
+
+API_URL = 'https://repology.org/api/v1/project/{}'
+
+async def get_version(name, conf, **kwargs):
+  project = conf.get('repology') or name
+  repo = conf.get('repo')
+  if not repo:
+    logger.error('repo field is required for repology source', name = name)
+
+
+  url = API_URL.format(project)
+  data = await _request(url)
+
+  versions = [pkg['version'] for pkg in data if pkg['repo'] == repo]
+  if not versions:
+    logger.error('package is not found', name=name, repo=repo)
+    return
+
+  return versions[0]
+
+@functools.lru_cache()
+async def _request(url):
+  async with session.get(url) as res:
+    return await res.json()
diff --git a/tests/test_repology.py b/tests/test_repology.py
new file mode 100644
index 0000000..4da0b63
--- /dev/null
+++ b/tests/test_repology.py
@@ -0,0 +1,15 @@
+# MIT licensed
+# Copyright (c) 2019 lilydjwg <lilydjwg@gmail.com>, et al.
+
+import pytest
+pytestmark = [pytest.mark.asyncio,
+              pytest.mark.needs_net]
+
+async def test_repology(get_version):
+  assert await get_version("ssed", {"repology": None, "repo": "aur"}) == "3.62"
+
+async def test_repology_no_repo(get_version):
+  try:
+    assert await get_version("ssed", {"repology": None}) is None
+  except RuntimeError as e:
+    assert "repo field is required" in str(e)