diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b31f56..0db240c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,7 @@
 # envolved Changelog
+## 1.1.2
+### Fixed
+* changed type of `args` to be an invariant `Mapping` instead of a `dict`
 ## 1.1.1
 ### Fixed
 * fixed type hint for auto-typed env vars.
diff --git a/envolved/_version.py b/envolved/_version.py
index a82b376..72f26f5 100644
--- a/envolved/_version.py
+++ b/envolved/_version.py
@@ -1 +1 @@
-__version__ = "1.1.1"
+__version__ = "1.1.2"
diff --git a/envolved/envvar.py b/envolved/envvar.py
index 0584f59..d16099b 100644
--- a/envolved/envvar.py
+++ b/envolved/envvar.py
@@ -62,7 +62,7 @@ def env_var(
     type: Callable[..., T],
     default: Union[T, Missing, Discard] = missing,
     pos_args: Sequence[Union[EnvVar[Any], InferEnvVar[Any]]],
-    args: Dict[str, Union[EnvVar[Any], InferEnvVar[Any]]] = {},  # noqa: B006
+    args: Mapping[str, Union[EnvVar[Any], InferEnvVar[Any]]] = {},
     description: Optional[str] = None,
     validators: Iterable[Callable[[T], T]] = (),
     on_partial: Union[T, Missing, AsDefault, Discard] = missing,
@@ -77,7 +77,7 @@ def env_var(
     type: Callable[..., T],
     default: Union[T, Missing, Discard] = missing,
     pos_args: Sequence[Union[EnvVar[Any], InferEnvVar[Any]]] = (),
-    args: Dict[str, Union[EnvVar[Any], InferEnvVar[Any]]],
+    args: Mapping[str, Union[EnvVar[Any], InferEnvVar[Any]]],
     description: Optional[str] = None,
     validators: Iterable[Callable[[T], T]] = (),
     on_partial: Union[T, Missing, AsDefault, Discard] = missing,
diff --git a/pyproject.toml b/pyproject.toml
index 9853861..89d7521 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "envolved"
-version = "1.1.1"
+version = "1.1.2"
 description = ""
 authors = ["ben avrahami <avrahami.ben@gmail.com>"]
 license = "MIT"