diff --git a/nvchecker_source/httpheader.py b/nvchecker_source/httpheader.py
index 761d00c..57feb46 100644
--- a/nvchecker_source/httpheader.py
+++ b/nvchecker_source/httpheader.py
@@ -3,53 +3,37 @@
 
 import re
 import sre_constants
-from nvchecker.api import (
-    VersionResult, Entry, KeyManager,
-    TemporaryError, session, GetVersionError
-)
 
-async def get_version(name, conf, **kwargs):
-    return await get_version_real(name, conf, **kwargs)
+from nvchecker.api import session, GetVersionError
 
-async def get_version_real(
-    name: str, conf: Entry, *, keymanager: KeyManager,
-    **kwargs,
-) -> VersionResult:
+async def get_version(name, conf, *, cache, **kwargs):
+  key = tuple(sorted(conf.items()))
+  return await cache.get(key, get_version_impl)
 
-    url = conf.get('url')
-    header = conf.get('header', 'Location')
-    follow_redirects = conf.get('follow_redirects', False)
-    method = conf.get('method', 'HEAD')
+async def get_version_impl(info):
+  conf = dict(info)
+  url = conf['url']
+  header = conf.get('header', 'Location')
+  follow_redirects = conf.get('follow_redirects', False)
+  method = conf.get('method', 'HEAD')
 
-    # Load token from config
-    token = conf.get('token')
-    # Load token from keyman
-    if token is None:
-        key_name = 'httpheader_' + name
-        token = keymanager.get_key(key_name)
+  try:
+    regex = re.compile(conf['regex'])
+  except sre_constants.error as e:
+    raise GetVersionError('bad regex', exc_info=e)
 
-    # Set private token if token exists.
-    headers = {}
-    if token:
-        headers["Authorization"] = token
+  res = await session.request(
+    url,
+    method = method,
+    follow_redirects = follow_redirects,
+  )
 
-    try:
-        regex = re.compile(conf['regex'])
-    except sre_constants.error as e:
-        raise GetVersionError('bad regex', exc_info=e)
+  header_value = res.headers.get(header)
+  if not header_value:
+    raise GetVersionError('header %s not found or is empty' % header)
 
-    res = await session.request(
-        url,
-        method=method,
-        headers=headers,
-        follow_redirects=follow_redirects,
-    )
-
-    header_value = res.headers.get(header)
-    if not header_value:
-        raise GetVersionError('header %s not found or is empty' % header)
-    try:
-        version = regex.findall(header_value)
-    except ValueError:
-        raise GetVersionError('version string not found.')
-    return version
\ No newline at end of file
+  try:
+    version = regex.findall(header_value)
+  except ValueError:
+    raise GetVersionError('version string not found.')
+  return version
diff --git a/nvchecker_source/regex.py b/nvchecker_source/regex.py
index 1f530a5..0828d4d 100644
--- a/nvchecker_source/regex.py
+++ b/nvchecker_source/regex.py
@@ -3,43 +3,28 @@
 
 import re
 import sre_constants
-from nvchecker.api import (
-    VersionResult, Entry, KeyManager,
-    TemporaryError, session, GetVersionError
-)
 
-async def get_version(name, conf, **kwargs):
-    return await get_version_real(name, conf, **kwargs)
+from nvchecker.api import session, GetVersionError
 
-async def get_version_real(
-    name: str, conf: Entry, *, keymanager: KeyManager,
-    **kwargs,
-) -> VersionResult:
+async def get_version(name, conf, *, cache, **kwargs):
+  key = tuple(sorted(conf.items()))
+  return await cache.get(key, get_version_impl)
 
-    # Load token from config
-    token = conf.get('token')
-    # Load token from keyman
-    if token is None:
-        key_name = 'regex_' + name
-        token = keymanager.get_key(key_name)
+async def get_version_impl(info):
+  conf = dict(info)
 
-    # Set private token if token exists.
-    headers = {}
-    if token:
-        headers["Authorization"] = token
+  try:
+    regex = re.compile(conf['regex'])
+  except sre_constants.error as e:
+    raise GetVersionError('bad regex', exc_info=e)
 
-    try:
-        regex = re.compile(conf['regex'])
-    except sre_constants.error as e:
-        raise GetVersionError('bad regex', exc_info=e)
+  encoding = conf.get('encoding', 'latin1')
 
-    encoding = conf.get('encoding', 'latin1')
-
-    res = await session.get(conf.get('url'), headers=headers)
-    body = res.body.decode(encoding)
-    try:
-        version = regex.findall(body)
-    except ValueError:
-        if not conf.get('missing_ok', False):
-            raise GetVersionError('version string not found.')
-    return version
\ No newline at end of file
+  res = await session.get(conf['url'])
+  body = res.body.decode(encoding)
+  try:
+    version = regex.findall(body)
+  except ValueError:
+    if not conf.get('missing_ok', False):
+      raise GetVersionError('version string not found.')
+  return version