diff --git a/parser/Cargo.lock b/parser/Cargo.lock
index 81a2dad..69a7397 100644
--- a/parser/Cargo.lock
+++ b/parser/Cargo.lock
@@ -588,7 +588,7 @@ checksum = "643cb0b8d4fcc284004d5fd0d67ccf61dfffadb7f75e1e71bc420f4688a3a704"
 
 [[package]]
 name = "llguidance_parser"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "anyhow",
  "cbindgen",
diff --git a/parser/Cargo.toml b/parser/Cargo.toml
index 278dba6..318da2f 100644
--- a/parser/Cargo.toml
+++ b/parser/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "llguidance_parser"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 
 [dependencies]
diff --git a/pyproject.toml b/pyproject.toml
index 86f0ce5..8b1f0e6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "llguidance"
-version = "0.3.0"
+version = "0.4.0"
 description = "Bindings for the Low-level Guidance (llguidance) Rust library for use within Guidance"
 requires-python = ">=3.9"
 license = "MIT"
diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index adc60b7..f2f2d38 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -594,7 +594,7 @@ checksum = "643cb0b8d4fcc284004d5fd0d67ccf61dfffadb7f75e1e71bc420f4688a3a704"
 
 [[package]]
 name = "llguidance"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "bytemuck",
  "llguidance_parser",
@@ -605,7 +605,7 @@ dependencies = [
 
 [[package]]
 name = "llguidance_parser"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "anyhow",
  "cbindgen",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index e688ac7..cd2daad 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "llguidance"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 
 [dependencies]