diff --git a/parakeet/utils/conf.py b/parakeet/utils/conf.py
deleted file mode 100644
index 3e9eb7b..0000000
--- a/parakeet/utils/conf.py
+++ /dev/null
@@ -1,48 +0,0 @@
-import attrdict
-import flatdict
-import argparse
-import yaml
-
-
-class Config(attrdict.AttrDict):
-    def dump(self, path):
-        with open(path, 'wt') as f:
-            yaml.safe_dump(dict(self), f, default_flow_style=None)
-
-    def dumps(self):
-        return yaml.safe_dump(dict(self), default_flow_style=None)
-
-    @classmethod
-    def from_file(cls, path):
-        with open(path, 'rt') as f:
-            c = yaml.safe_load(f)
-        return cls(c)
-
-    def merge_file(self, path):
-        with open(path, 'rt') as f:
-            other = yaml.safe_load(f)
-        self.update(self + other)
-
-    def merge_args(self, args):
-        args_dict = vars(args)
-        args_dict.pop("config") # exclude config file path
-        args_dict = {k: v for k, v in args_dict.items() if v is not None}
-        nested_dict = flatdict.FlatDict(args_dict, delimiter=".").as_dict()
-        self.update(self + nested_dict)
-        
-    def merge(self, other):
-        self.update(self + other)
-
-    def flatten(self):
-        flat = flatdict.FlatDict(self, delimiter='.')
-        return flat
-
-    def add_options_to_parser(self, parser):
-        parser.add_argument(
-            "--config", type=str, 
-            help="extra config file to override the default config")
-        flat = self.flatten()
-        g = parser.add_argument_group("config file options")
-        for k, v in flat.items():
-            g.add_argument("--{}".format(k), type=type(v), 
-                           help="config file option: {}".format(k))
\ No newline at end of file
diff --git a/setup.py b/setup.py
index bc1ff1d..3fd99ad 100644
--- a/setup.py
+++ b/setup.py
@@ -66,7 +66,8 @@ setup_info = dict(
         'llvmlite==0.31.0',
         'opencc',
         'g2p_en',
-        'g2pM'
+        'g2pM',
+        'yacs',
     ],
 
     # Package info