diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d1d871b..6c312633 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 <!--next-version-placeholder-->
 
+## v0.4.0 (2021-11-25)
+### Feature
+* Introduce module suffixes to allow adjustment of grpc generated code ([`b0b644a`](https://github.com/cpcloud/protoletariat/commit/b0b644a8daaa93850e4723e9bcaf47811294bb40))
+
+### Fix
+* Rewrite using per-file rewriters ([`baa883c`](https://github.com/cpcloud/protoletariat/commit/baa883cabb330fc289679d087f370a18e5ec5d15))
+
 ## v0.3.1 (2021-11-24)
 ### Fix
 * Generate packages in the output directory ([`a00cc06`](https://github.com/cpcloud/protoletariat/commit/a00cc0651ee4244500443aca9b561278783d0587))
diff --git a/protoletariat/__init__.py b/protoletariat/__init__.py
index 260c070a..6a9beea8 100644
--- a/protoletariat/__init__.py
+++ b/protoletariat/__init__.py
@@ -1 +1 @@
-__version__ = "0.3.1"
+__version__ = "0.4.0"
diff --git a/pyproject.toml b/pyproject.toml
index 63d70789..9dca9937 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "protoletariat"
-version = "0.3.1"
+version = "0.4.0"
 packages = [{ include = "protoletariat" }]
 homepage = "https://github.com/cpcloud/protoletariat"
 repository = "https://github.com/cpcloud/protoletariat"