diff --git a/nvchecker/get_version.py b/nvchecker/get_version.py
index b8a75b5..cd79670 100644
--- a/nvchecker/get_version.py
+++ b/nvchecker/get_version.py
@@ -38,15 +38,27 @@ def substitute_version(version, name, conf):
   # No substitution rules found. Just return the original version string.
   return version
 
+_cache = {}
+
 async def get_version(name, conf, **kwargs):
   for key in handler_precedence:
     if key in conf:
-      func = import_module('.source.' + key, __package__).get_version
+      mod = import_module('.source.' + key, __package__)
+      func = mod.get_version
+      get_cacheable_conf = getattr(mod, 'get_cacheable_conf', lambda name, conf: conf)
       break
   else:
     logger.error('no idea to get version info.', name=name)
     return
 
+  cacheable_conf = get_cacheable_conf(name, conf)
+  cache_key = tuple(sorted(cacheable_conf.items()))
+  if cache_key in _cache:
+    version = _cache[cache_key]
+    logger.debug('cache hit', name=name,
+                 cache_key=cache_key, cached=version)
+    return version
+
   version = await func(name, conf, **kwargs)
   if version:
     version = version.replace('\n', ' ')
@@ -54,4 +66,7 @@ async def get_version(name, conf, **kwargs):
       version = substitute_version(version, name, conf)
     except (ValueError, re.error):
       logger.exception('error occurred in version substitutions', name=name)
+
+  if version is not None:
+    _cache[cache_key] = version
   return version
diff --git a/nvchecker/source/__init__.py b/nvchecker/source/__init__.py
index 024d9b0..ae79e12 100644
--- a/nvchecker/source/__init__.py
+++ b/nvchecker/source/__init__.py
@@ -19,3 +19,10 @@ m = __import__('%s_httpclient' % which, globals(), locals(), level=1)
 __all__ = m.__all__
 for x in __all__:
   globals()[x] = getattr(m, x)
+
+def conf_cacheable_with_name(key):
+  def get_cacheable_conf(name, conf):
+    conf = dict(conf)
+    conf[key] = conf.get(key) or name
+    return conf
+  return get_cacheable_conf
diff --git a/nvchecker/source/archpkg.py b/nvchecker/source/archpkg.py
index b57bf16..cb6a192 100644
--- a/nvchecker/source/archpkg.py
+++ b/nvchecker/source/archpkg.py
@@ -3,12 +3,14 @@
 
 import structlog
 
-from . import session
+from . import session, conf_cacheable_with_name
 
 logger = structlog.get_logger(logger_name=__name__)
 
 URL = 'https://www.archlinux.org/packages/search/json/'
 
+get_cacheable_conf = conf_cacheable_with_name('archpkg')
+
 async def get_version(name, conf, **kwargs):
   pkg = conf.get('archpkg') or name
   strip_release = conf.getboolean('strip-release', False)
diff --git a/nvchecker/source/aur.py b/nvchecker/source/aur.py
index fc4b0eb..1ec378e 100644
--- a/nvchecker/source/aur.py
+++ b/nvchecker/source/aur.py
@@ -4,12 +4,14 @@
 import structlog
 from datetime import datetime
 
-from . import session
+from . import session, conf_cacheable_with_name
 
 logger = structlog.get_logger(logger_name=__name__)
 
 AUR_URL = 'https://aur.archlinux.org/rpc/?v=5&type=info&arg[]='
 
+get_cacheable_conf = conf_cacheable_with_name('aur')
+
 async def get_version(name, conf, **kwargs):
   aurname = conf.get('aur') or name
   use_last_modified = conf.getboolean('use_last_modified', False)
diff --git a/nvchecker/source/cpan.py b/nvchecker/source/cpan.py
index 22c3888..9fbfbe7 100644
--- a/nvchecker/source/cpan.py
+++ b/nvchecker/source/cpan.py
@@ -9,7 +9,7 @@ CPAN_URL = 'https://fastapi.metacpan.org/release/%s'
 def _version_from_json(data):
   return str(data['version'])
 
-get_version = simple_json(
+get_version, get_cacheable_conf = simple_json(
   CPAN_URL,
   'cpan',
   _version_from_json,
diff --git a/nvchecker/source/cratesio.py b/nvchecker/source/cratesio.py
index 5449665..9aea99c 100644
--- a/nvchecker/source/cratesio.py
+++ b/nvchecker/source/cratesio.py
@@ -1,11 +1,12 @@
 # MIT licensed
-# Copyright (c) 2013-2017 lilydjwg <lilydjwg@gmail.com>, et al.
+# Copyright (c) 2013-2018 lilydjwg <lilydjwg@gmail.com>, et al.
 
-import os
-from . import session
+from . import session, conf_cacheable_with_name
 
 API_URL = 'https://crates.io/api/v1/crates/%s'
 
+get_cacheable_conf = conf_cacheable_with_name('cratesio')
+
 async def get_version(name, conf, **kwargs):
   name = conf.get('cratesio') or name
   async with session.get(API_URL % name) as res:
diff --git a/nvchecker/source/debianpkg.py b/nvchecker/source/debianpkg.py
index d5ff0da..336315a 100644
--- a/nvchecker/source/debianpkg.py
+++ b/nvchecker/source/debianpkg.py
@@ -3,12 +3,14 @@
 
 import structlog
 
-from . import session
+from . import session, conf_cacheable_with_name
 
 logger = structlog.get_logger(logger_name=__name__)
 
 URL = 'https://sources.debian.org/api/src/%(pkgname)s/?suite=%(suite)s'
 
+get_cacheable_conf = conf_cacheable_with_name('debianpkg')
+
 async def get_version(name, conf, **kwargs):
   pkg = conf.get('debianpkg') or name
   strip_release = conf.getboolean('strip-release', False)
diff --git a/nvchecker/source/gems.py b/nvchecker/source/gems.py
index 2d79bce..308e56d 100644
--- a/nvchecker/source/gems.py
+++ b/nvchecker/source/gems.py
@@ -8,7 +8,7 @@ GEMS_URL = 'https://rubygems.org/api/v1/versions/%s.json'
 def _version_from_json(data):
   return data[0]['number']
 
-get_version = simple_json(
+get_version, get_cacheable_conf = simple_json(
   GEMS_URL,
   'gems',
   _version_from_json,
diff --git a/nvchecker/source/hackage.py b/nvchecker/source/hackage.py
index 178c94d..79ced66 100644
--- a/nvchecker/source/hackage.py
+++ b/nvchecker/source/hackage.py
@@ -8,7 +8,7 @@ HACKAGE_URL = 'https://hackage.haskell.org/package/%s/preferred.json'
 def _version_from_json(data):
   return data['normal-version'][0]
 
-get_version = simple_json(
+get_version, get_cacheable_conf = simple_json(
   HACKAGE_URL,
   'hackage',
   _version_from_json,
diff --git a/nvchecker/source/npm.py b/nvchecker/source/npm.py
index e046197..256c4b4 100644
--- a/nvchecker/source/npm.py
+++ b/nvchecker/source/npm.py
@@ -8,7 +8,7 @@ NPM_URL = 'https://registry.npmjs.org/%s'
 def _version_from_json(data):
   return data['dist-tags']['latest']
 
-get_version = simple_json(
+get_version, get_cacheable_conf = simple_json(
   NPM_URL,
   'npm',
   _version_from_json,
diff --git a/nvchecker/source/packagist.py b/nvchecker/source/packagist.py
index 7e2397a..dbb4d6d 100644
--- a/nvchecker/source/packagist.py
+++ b/nvchecker/source/packagist.py
@@ -11,7 +11,7 @@ def _version_from_json(data):
   if len(data):
     return max(data, key=lambda version: data[version]["time"])
 
-get_version = simple_json(
+get_version, get_cacheable_conf = simple_json(
   PACKAGIST_URL,
   'packagist',
   _version_from_json,
diff --git a/nvchecker/source/pacman.py b/nvchecker/source/pacman.py
index aa487a4..65de504 100644
--- a/nvchecker/source/pacman.py
+++ b/nvchecker/source/pacman.py
@@ -1,7 +1,9 @@
 # MIT licensed
 # Copyright (c) 2013-2017 lilydjwg <lilydjwg@gmail.com>, et al.
 
-from . import cmd
+from . import cmd, conf_cacheable_with_name
+
+get_cacheable_conf = conf_cacheable_with_name('debianpkg')
 
 async def get_version(name, conf, **kwargs):
   referree = conf.get('pacman') or name
diff --git a/nvchecker/source/pypi.py b/nvchecker/source/pypi.py
index 6915e15..4b2ff69 100644
--- a/nvchecker/source/pypi.py
+++ b/nvchecker/source/pypi.py
@@ -8,7 +8,7 @@ PYPI_URL = 'https://pypi.python.org/pypi/%s/json'
 def _version_from_json(data):
   return data['info']['version']
 
-get_version = simple_json(
+get_version, get_cacheable_conf = simple_json(
   PYPI_URL,
   'pypi',
   _version_from_json,
diff --git a/nvchecker/source/simple_json.py b/nvchecker/source/simple_json.py
index 5561fa5..0f7f879 100644
--- a/nvchecker/source/simple_json.py
+++ b/nvchecker/source/simple_json.py
@@ -1,7 +1,7 @@
 # MIT licensed
 # Copyright (c) 2013-2017 lilydjwg <lilydjwg@gmail.com>, et al.
 
-from . import session
+from . import session, conf_cacheable_with_name
 
 def simple_json(urlpat, confkey, version_from_json):
 
@@ -17,4 +17,6 @@ def simple_json(urlpat, confkey, version_from_json):
     version = version_from_json(data)
     return version
 
-  return get_version
+  get_cacheable_conf = conf_cacheable_with_name(confkey)
+
+  return get_version, get_cacheable_conf
diff --git a/nvchecker/source/ubuntupkg.py b/nvchecker/source/ubuntupkg.py
index 98c7083..a72be41 100644
--- a/nvchecker/source/ubuntupkg.py
+++ b/nvchecker/source/ubuntupkg.py
@@ -3,12 +3,14 @@
 
 import structlog
 
-from . import session
+from . import session, conf_cacheable_with_name
 
 logger = structlog.get_logger(logger_name=__name__)
 
 URL = 'https://api.launchpad.net/1.0/ubuntu/+archive/primary?ws.op=getPublishedSources&source_name=%s&exact_match=true'
 
+get_cacheable_conf = conf_cacheable_with_name('ubuntupkg')
+
 async def get_version(name, conf, **kwargs):
   pkg = conf.get('ubuntupkg') or name
   strip_release = conf.getboolean('strip-release', False)
diff --git a/tests/test_anitya.py b/tests/test_anitya.py
index 8ec7943..cf0a818 100644
--- a/tests/test_anitya.py
+++ b/tests/test_anitya.py
@@ -5,4 +5,4 @@ import pytest
 pytestmark = pytest.mark.asyncio
 
 async def test_anitya(get_version):
-    assert await get_version("shutter", {"anitya": "fedora/shutter"}) == "0.94"
+  assert await get_version("shutter", {"anitya": "fedora/shutter"}) == "0.94.2"