diff --git a/README.md b/README.md
index 8636290..f131d9c 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Add to your Cargo.toml file:
 
 ```toml
 [dependencies]
-enumscribe = "0.3"
+enumscribe = "0.4"
 ```
 
 Derive macros and [`serde`](https://crates.io/crates/serde) support are enabled by default. They can be disabled by
diff --git a/enumscribe/Cargo.toml b/enumscribe/Cargo.toml
index f630f00..de888d2 100644
--- a/enumscribe/Cargo.toml
+++ b/enumscribe/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "enumscribe"
-version = "0.3.1"
+version = "0.4.0"
 authors = ["Tom Panton <pantonshire@gmail.com>"]
 edition = "2018"
 license = "MIT"
@@ -11,7 +11,7 @@ categories = ["encoding"]
 keywords = ["enum", "derive", "serde"]
 
 [dependencies]
-enumscribe_derive = { version = "0.3.1", path = "../enumscribe_derive", default-features = false, optional = true }
+enumscribe_derive = { version = "0.4.0", path = "../enumscribe_derive", default-features = false, optional = true }
 serde = { version = "1.0", default-features = false, optional = true }
 
 [dev-dependencies]
diff --git a/enumscribe/README.md b/enumscribe/README.md
index 8636290..f131d9c 100644
--- a/enumscribe/README.md
+++ b/enumscribe/README.md
@@ -11,7 +11,7 @@ Add to your Cargo.toml file:
 
 ```toml
 [dependencies]
-enumscribe = "0.3"
+enumscribe = "0.4"
 ```
 
 Derive macros and [`serde`](https://crates.io/crates/serde) support are enabled by default. They can be disabled by
diff --git a/enumscribe_derive/Cargo.toml b/enumscribe_derive/Cargo.toml
index 59ddec3..cf01a8d 100644
--- a/enumscribe_derive/Cargo.toml
+++ b/enumscribe_derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "enumscribe_derive"
-version = "0.3.1"
+version = "0.4.0"
 authors = ["Tom Panton <pantonshire@gmail.com>"]
 edition = "2018"
 license = "MIT"
diff --git a/enumscribe_derive/README.md b/enumscribe_derive/README.md
index 8636290..f131d9c 100644
--- a/enumscribe_derive/README.md
+++ b/enumscribe_derive/README.md
@@ -11,7 +11,7 @@ Add to your Cargo.toml file:
 
 ```toml
 [dependencies]
-enumscribe = "0.3"
+enumscribe = "0.4"
 ```
 
 Derive macros and [`serde`](https://crates.io/crates/serde) support are enabled by default. They can be disabled by