diff --git a/Cargo.lock b/Cargo.lock
index 4978ac3..44891af 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -553,7 +553,7 @@ dependencies = [
 
 [[package]]
 name = "sbd-gen"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "anyhow",
  "argh",
@@ -574,7 +574,7 @@ dependencies = [
 
 [[package]]
 name = "sbd-gen-schema"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "semver",
  "serde",
diff --git a/crates/sbd-gen-schema/CHANGELOG.md b/crates/sbd-gen-schema/CHANGELOG.md
index 45f4c25..0804d71 100644
--- a/crates/sbd-gen-schema/CHANGELOG.md
+++ b/crates/sbd-gen-schema/CHANGELOG.md
@@ -7,6 +7,21 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0](https://github.com/ariel-os/sbd/compare/sbd-gen-schema-v0.3.0...sbd-gen-schema-v0.4.0) - 2026-04-08
+
+### Added
+
+- make schema version separate from schema crate version
+
+### Other
+
+- *(deps)* bump semver from 1.0.27 to 1.0.28
+- *(uart)* equate absent and empty .possible_peripherals
+- Generate code for UARTs
+- Add property for UART MCU peripherals
+- Expose presence of host facing UARTs as `has_host_facing_uart`
+- Define host_facing UART property
+
 ## [0.3.0](https://github.com/ariel-os/sbd/compare/sbd-gen-schema-v0.2.0...sbd-gen-schema-v0.3.0) - 2026-03-20
 
 ### Other
diff --git a/crates/sbd-gen-schema/Cargo.toml b/crates/sbd-gen-schema/Cargo.toml
index 14bd2f5..003a4f0 100644
--- a/crates/sbd-gen-schema/Cargo.toml
+++ b/crates/sbd-gen-schema/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sbd-gen-schema"
-version = "0.3.0"
+version = "0.4.0"
 description = "Schema of SBD files"
 categories = ["embedded", "hardware-support"]
 keywords = ["ariel", "board", "bsp", "riot"]
diff --git a/crates/sbd-gen/CHANGELOG.md b/crates/sbd-gen/CHANGELOG.md
index 006cdb8..6a51636 100644
--- a/crates/sbd-gen/CHANGELOG.md
+++ b/crates/sbd-gen/CHANGELOG.md
@@ -7,6 +7,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.3.1](https://github.com/ariel-os/sbd/compare/sbd-gen-v0.3.0...sbd-gen-v0.3.1) - 2026-04-08
+
+### Other
+
+- *(deps)* bump insta from 1.47.1 to 1.47.2
+- *(deps)* bump insta from 1.47.0 to 1.47.1
+- *(deps)* bump insta from 1.46.3 to 1.47.0
+- *(uart)* equate absent and empty .possible_peripherals
+- Test code generation
+- Generate code for UARTs
+- Expose presence of host facing UARTs as `has_host_facing_uart`
+- address clippy lint
+
 ## [0.3.0](https://github.com/ariel-os/sbd/compare/sbd-gen-v0.2.0...sbd-gen-v0.3.0) - 2026-03-20
 
 ### Other
diff --git a/crates/sbd-gen/Cargo.toml b/crates/sbd-gen/Cargo.toml
index f6d0630..3adb0d5 100644
--- a/crates/sbd-gen/Cargo.toml
+++ b/crates/sbd-gen/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sbd-gen"
-version = "0.3.0"
+version = "0.3.1"
 description = "A generator for turning SBD (Structured Board Descriptions) into BSPs."
 categories = ["command-line-utilities", "embedded", "hardware-support"]
 keywords = ["ariel", "board", "bsp", "riot"]
@@ -16,7 +16,7 @@ camino = { workspace = true }
 indexmap = { workspace = true }
 lazy-regex = { workspace = true }
 prettyplease = { workspace = true }
-sbd-gen-schema = { path = "../sbd-gen-schema", version = "0.3.0" }
+sbd-gen-schema = { path = "../sbd-gen-schema", version = "0.4.0" }
 serde = { workspace = true }
 serde_with = { workspace = true }
 serde_yaml = { workspace = true }