diff --git a/unwind/config.py b/unwind/config.py
index 6cc255a..9e3a908 100644
--- a/unwind/config.py
+++ b/unwind/config.py
@@ -2,20 +2,20 @@ import os
 import tomllib
 from pathlib import Path
 
-datadir = Path(os.getenv("UNWIND_DATA") or "./data")
-cachedir = (
-    Path(cachedir)
-    if (cachedir := os.getenv("UNWIND_CACHEDIR", datadir / ".cache"))
-    else None
+datadir: Path = Path(os.getenv("UNWIND_DATA") or "./data")
+cachedir: Path = Path(p) if (p := os.getenv("UNWIND_CACHEDIR")) else datadir / ".cache"
+debug: bool = os.getenv("DEBUG") == "1"
+loglevel: str = os.getenv("UNWIND_LOGLEVEL") or ("DEBUG" if debug else "INFO")
+storage_path: Path = (
+    Path(p) if (p := os.getenv("UNWIND_STORAGE")) else datadir / "db.sqlite"
+)
+config_path: Path = (
+    Path(p) if (p := os.getenv("UNWIND_CONFIG")) else datadir / "config.toml"
 )
-debug = os.getenv("DEBUG") == "1"
-loglevel = os.getenv("UNWIND_LOGLEVEL") or ("DEBUG" if debug else "INFO")
-storage_path = os.getenv("UNWIND_STORAGE", datadir / "db.sqlite")
-config_path = os.getenv("UNWIND_CONFIG", datadir / "config.toml")
 
 with open(config_path, "rb") as fd:
     _config = tomllib.load(fd)
 
-api_base = _config["api"].get("base", "/api/")
-api_cors = _config["api"].get("cors", "*")
-api_credentials = _config["api"].get("credentials", {})
+api_base: str = _config["api"].get("base", "/api/")
+api_cors: str = _config["api"].get("cors", "*")
+api_credentials: dict[str, str] = _config["api"].get("credentials", {})