diff --git a/Cargo.lock b/Cargo.lock
index 9f9cfe9..245d2f2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1758,7 +1758,7 @@ dependencies = [
 
 [[package]]
 name = "reductionist"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "async-trait",
  "aws-credential-types",
diff --git a/Cargo.toml b/Cargo.toml
index 411a581..a024e6a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "reductionist"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 # Due to AWS SDK.
 rust-version = "1.66.1"