fix: use tomli
diff --git a/atmosphere/models/conf.py b/atmosphere/models/conf.py
index 869b982..d706edb 100644
--- a/atmosphere/models/conf.py
+++ b/atmosphere/models/conf.py
@@ -1,4 +1,4 @@
-import toml
+import tomli
 
 from schematics import types