diff --git a/layercake/layercake/batch.py b/layercake/layercake/batch.py
index bf644b6..25918f0 100644
--- a/layercake/layercake/batch.py
+++ b/layercake/layercake/batch.py
@@ -89,7 +89,7 @@ class BatchProcessor(AbstractContextManager):
 
         return self
 
-    def __enter__(self):
+    def __enter__(self) -> Self:
         """Remove results from previous execution."""
         self.successes.clear()
         self.failures.clear()
diff --git a/layercake/pyproject.toml b/layercake/pyproject.toml
index af95cce..27dcb73 100644
--- a/layercake/pyproject.toml
+++ b/layercake/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "layercake"
-version = "0.6.4"
+version = "0.6.5"
 description = "Packages shared dependencies to optimize deployment and ensure consistency across functions."
 readme = "README.md"
 authors = [