diff --git a/nvchecker/get_version.py b/nvchecker/get_version.py
index 7824790..96be522 100644
--- a/nvchecker/get_version.py
+++ b/nvchecker/get_version.py
@@ -38,19 +38,7 @@ 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):
-  cache_key = sorted(conf.items()) + sorted(kwargs.items())
-  cache_key = tuple(cache_key)
-  if cache_key in _cache:
-    return _cache[cache_key]
-
-  version = await _get_version_real(name, conf, **kwargs)
-  _cache[cache_key] = version
-  return version
-
-async def _get_version_real(name, conf, **kwargs):
   for key in handler_precedence:
     if key in conf:
       func = import_module('.source.' + key, __package__).get_version
diff --git a/tests/test_cache.py b/tests/test_cache.py
deleted file mode 100644
index 455fd54..0000000
--- a/tests/test_cache.py
+++ /dev/null
@@ -1,12 +0,0 @@
-# MIT licensed
-# Copyright (c) 2018 lilydjwg <lilydjwg@gmail.com>, et al.
-
-import pytest
-pytestmark = pytest.mark.asyncio
-
-async def test_cache(get_version):
-  a = await get_version("a", {"cmd": "date +%%N"})
-  b = await get_version("b", {"cmd": "date +%%N"})
-  c = await get_version("c", {"cmd": "date"})
-  assert a == b
-  assert a != c