diff --git a/.gitignore b/.gitignore
index eae0273..ac7ea24 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,3 @@
-.vscode
-
 docs/docs/examples/
 docs/notebooks/diagram.png
 docs/notebooks/diagram.svg
@@ -7,6 +5,10 @@ docs/site
 
 tests/_outputs
 
+.venv*
+.vscode
+**/.DS_Store
+
 ### Python
 
 # Byte-compiled / optimized / DLL files
diff --git a/HISTORY.md b/HISTORY.md
index 3172f32..1f6b12a 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,9 @@
 # erdantic Changelog
 
+## v1.0.0.post2 (2024-04-10)
+
+- Fixed missing LICENSE file in sdist.
+
 ## v1.0.0.post1 (2024-04-09)
 
 - Fixed outdated note in README.
diff --git a/pyproject.toml b/pyproject.toml
index 1866f81..ae06084 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,10 @@
 [build-system]
-requires = ["flit_core >=3.2,<4"]
-build-backend = "flit_core.buildapi"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [project]
 name = "erdantic"
-version = "1.0.0.post1"
+version = "1.0.0.post2"
 description = "Entity relationship diagrams for Python data model classes like Pydantic."
 readme = "README.md"
 authors = [{ name = "DrivenData", email = "info@drivendata.org" }, { name = "Jay Qi" }]