diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9d584ee16..94689ef18b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ Changelog for the runtimes governed by the Polkadot Fellowship.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## [Unreleased]
+## [1.4.3] 14.04.2025
 
 ### Changed
 
diff --git a/relay/kusama/src/lib.rs b/relay/kusama/src/lib.rs
index 2835af3700..219f3e7038 100644
--- a/relay/kusama/src/lib.rs
+++ b/relay/kusama/src/lib.rs
@@ -180,7 +180,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("kusama"),
 	impl_name: create_runtime_str!("parity-kusama"),
 	authoring_version: 2,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 26,
diff --git a/relay/polkadot/src/lib.rs b/relay/polkadot/src/lib.rs
index 8df17bfc7d..ea09fa01b1 100644
--- a/relay/polkadot/src/lib.rs
+++ b/relay/polkadot/src/lib.rs
@@ -164,7 +164,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("polkadot"),
 	impl_name: create_runtime_str!("parity-polkadot"),
 	authoring_version: 0,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 26,
diff --git a/system-parachains/asset-hubs/asset-hub-kusama/src/lib.rs b/system-parachains/asset-hubs/asset-hub-kusama/src/lib.rs
index 91db8f5271..ebdd1e61dc 100644
--- a/system-parachains/asset-hubs/asset-hub-kusama/src/lib.rs
+++ b/system-parachains/asset-hubs/asset-hub-kusama/src/lib.rs
@@ -123,7 +123,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("statemine"),
 	impl_name: create_runtime_str!("statemine"),
 	authoring_version: 1,
-	spec_version: 1_004_002,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 15,
diff --git a/system-parachains/asset-hubs/asset-hub-polkadot/src/lib.rs b/system-parachains/asset-hubs/asset-hub-polkadot/src/lib.rs
index e8d3ce7bbc..f35d1c3546 100644
--- a/system-parachains/asset-hubs/asset-hub-polkadot/src/lib.rs
+++ b/system-parachains/asset-hubs/asset-hub-polkadot/src/lib.rs
@@ -155,7 +155,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("statemint"),
 	impl_name: create_runtime_str!("statemint"),
 	authoring_version: 1,
-	spec_version: 1_004_002,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 15,
diff --git a/system-parachains/bridge-hubs/bridge-hub-kusama/src/lib.rs b/system-parachains/bridge-hubs/bridge-hub-kusama/src/lib.rs
index b17acdf821..9b2779604c 100644
--- a/system-parachains/bridge-hubs/bridge-hub-kusama/src/lib.rs
+++ b/system-parachains/bridge-hubs/bridge-hub-kusama/src/lib.rs
@@ -174,7 +174,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("bridge-hub-kusama"),
 	impl_name: create_runtime_str!("bridge-hub-kusama"),
 	authoring_version: 1,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 5,
diff --git a/system-parachains/bridge-hubs/bridge-hub-polkadot/src/lib.rs b/system-parachains/bridge-hubs/bridge-hub-polkadot/src/lib.rs
index 8029cce0bc..dc8ca39724 100644
--- a/system-parachains/bridge-hubs/bridge-hub-polkadot/src/lib.rs
+++ b/system-parachains/bridge-hubs/bridge-hub-polkadot/src/lib.rs
@@ -173,7 +173,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("bridge-hub-polkadot"),
 	impl_name: create_runtime_str!("bridge-hub-polkadot"),
 	authoring_version: 1,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 4,
diff --git a/system-parachains/collectives/collectives-polkadot/src/lib.rs b/system-parachains/collectives/collectives-polkadot/src/lib.rs
index 8e8c924438..5ba8a81af3 100644
--- a/system-parachains/collectives/collectives-polkadot/src/lib.rs
+++ b/system-parachains/collectives/collectives-polkadot/src/lib.rs
@@ -125,7 +125,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("collectives"),
 	impl_name: create_runtime_str!("collectives"),
 	authoring_version: 1,
-	spec_version: 1_004_002,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 7,
diff --git a/system-parachains/coretime/coretime-kusama/src/lib.rs b/system-parachains/coretime/coretime-kusama/src/lib.rs
index d5f2ab9400..132332ab70 100644
--- a/system-parachains/coretime/coretime-kusama/src/lib.rs
+++ b/system-parachains/coretime/coretime-kusama/src/lib.rs
@@ -140,7 +140,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("coretime-kusama"),
 	impl_name: create_runtime_str!("coretime-kusama"),
 	authoring_version: 1,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 1,
diff --git a/system-parachains/coretime/coretime-polkadot/src/lib.rs b/system-parachains/coretime/coretime-polkadot/src/lib.rs
index e4ff828be9..d23ee55760 100644
--- a/system-parachains/coretime/coretime-polkadot/src/lib.rs
+++ b/system-parachains/coretime/coretime-polkadot/src/lib.rs
@@ -140,7 +140,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("coretime-polkadot"),
 	impl_name: create_runtime_str!("coretime-polkadot"),
 	authoring_version: 1,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 0,
diff --git a/system-parachains/encointer/src/lib.rs b/system-parachains/encointer/src/lib.rs
index 90073c47b6..0c706ede3d 100644
--- a/system-parachains/encointer/src/lib.rs
+++ b/system-parachains/encointer/src/lib.rs
@@ -131,7 +131,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("encointer-parachain"),
 	impl_name: create_runtime_str!("encointer-parachain"),
 	authoring_version: 1,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 1,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 4,
diff --git a/system-parachains/gluttons/glutton-kusama/src/lib.rs b/system-parachains/gluttons/glutton-kusama/src/lib.rs
index 874934419f..7e332d5d96 100644
--- a/system-parachains/gluttons/glutton-kusama/src/lib.rs
+++ b/system-parachains/gluttons/glutton-kusama/src/lib.rs
@@ -91,7 +91,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("glutton"),
 	impl_name: create_runtime_str!("glutton"),
 	authoring_version: 1,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 1,
diff --git a/system-parachains/people/people-kusama/src/lib.rs b/system-parachains/people/people-kusama/src/lib.rs
index 19e36e0ed7..5e0529cbaf 100644
--- a/system-parachains/people/people-kusama/src/lib.rs
+++ b/system-parachains/people/people-kusama/src/lib.rs
@@ -178,7 +178,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("people-kusama"),
 	impl_name: create_runtime_str!("people-kusama"),
 	authoring_version: 1,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 1,
diff --git a/system-parachains/people/people-polkadot/src/lib.rs b/system-parachains/people/people-polkadot/src/lib.rs
index b68da57cf2..6431076164 100644
--- a/system-parachains/people/people-polkadot/src/lib.rs
+++ b/system-parachains/people/people-polkadot/src/lib.rs
@@ -143,7 +143,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("people-polkadot"),
 	impl_name: create_runtime_str!("people-polkadot"),
 	authoring_version: 1,
-	spec_version: 1_004_001,
+	spec_version: 1_004_003,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 0,