diff --git a/pystarport/expansion.py b/pystarport/expansion.py
index 00d010b..cb03af0 100644
--- a/pystarport/expansion.py
+++ b/pystarport/expansion.py
@@ -1,11 +1,9 @@
 import os
-import re
 from pathlib import Path
 from typing import Any, Mapping, Optional, Text
 
 import yaml
 from dotenv import dotenv_values, load_dotenv
-from dotenv.variables import parse_variables
 
 
 def expand_posix_vars(obj: Any, variables: Mapping[Text, Optional[Any]]) -> Any:
@@ -21,47 +19,9 @@ def expand_posix_vars(obj: Any, variables: Mapping[Text, Optional[Any]]) -> Any:
     elif isinstance(obj, (list,)):
         for index in range(len(obj)):
             obj[index] = expand_posix_vars(obj[index], variables)
-    elif isinstance(obj, (str,)):
-        obj = _str_to_python_value(_expand(obj, variables))
     return obj
 
 
-def _expand(value, variables={}):
-    """_expand does POSIX-style variable expansion
-
-    This is adapted from python-dotenv, specifically here:
-
-    https://github.com/theskumar/python-dotenv/commit/17dba65244c1d4d10f591fe37c924bd2c6fd1cfc
-
-    We need this layer here so we can explicitly pass in variables;
-    python-dotenv assumes you want to use os.environ.
-    """
-
-    if not isinstance(value, (str,)):
-        return value
-    atoms = parse_variables(value)
-    return "".join([str(atom.resolve(variables)) for atom in atoms])
-
-
-INT_REGEX = re.compile(r"^[-+]?[0-9]+$")
-
-
-def _str_to_python_value(val):
-    """_str_to_python_value infers the data type from a string.
-
-    This could eventually use PyYAML's parsing logic.
-    """
-    if not isinstance(val, (str,)):
-        return val
-    elif val == "true" or val == "True" or val == "on":
-        return True
-    elif val == "false" or val == "False" or val == "off":
-        return False
-    # elif INT_REGEX.match(val):
-    #     return int(val)
-    return val
-
-
 def expand_yaml(config_path, dotenv):
     config = yaml.safe_load(open(config_path))