diff --git a/CHANGELOG.md b/CHANGELOG.md
index 541566f..609145c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Next
+## 0.4.0 - 2023 May 25
 - Changed `from_pipelines` to accept an iterator instead of vector
 - Add `Pipeline::from_rows()`
 - Add `Pipeline::collect_into_rows()`
diff --git a/Cargo.lock b/Cargo.lock
index 9a0f370..bd4cc4d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -38,7 +38,7 @@ dependencies = [
 
 [[package]]
 name = "csv-pipeline"
-version = "0.3.1"
+version = "0.4.0"
 dependencies = [
  "csv",
  "linked-hash-map",
diff --git a/Cargo.toml b/Cargo.toml
index 6964d41..e3d4a4c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "csv-pipeline"
-version = "0.3.1"
+version = "0.4.0"
 description = "CSV processing library"
 authors = ["Kasper Henningsen"]
 edition = "2021"