diff --git a/CHANGELOG.md b/CHANGELOG.md
index a840fe58df..324870f626 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,22 @@ chapter: false
pre: "6. "
---
+### [4.2.1] - 2021-11-16
+
+#### Added
+>
+> N / A
+
+#### Changed
+
+> ##### 🏢 Server
+>
+> - Fixed configuration parsing which would wrongly use Shelley's slots per epoch instead of Byron's. This had an impact on the reported slot number in the chain-sync protocol, where slot numbers would be wrongly offset by `432000` per epoch after the first epoch.
+
+#### Removed
+
+> N/A
+
### [4.2.0] - 2021-11-05
#### Added
diff --git a/clients/TypeScript/package.json b/clients/TypeScript/package.json
index 37b6ba4f90..f90fcaedf3 100644
--- a/clients/TypeScript/package.json
+++ b/clients/TypeScript/package.json
@@ -1,6 +1,6 @@
{
"name": "cardano-ogmios",
- "version": "4.2.0",
+ "version": "4.2.1",
"private": true,
"description": "TypeScript monorepo with client libraries for Cardano Ogmios",
"engines": {
diff --git a/clients/TypeScript/packages/client/package.json b/clients/TypeScript/packages/client/package.json
index 3310ef7a8e..fac7113d47 100644
--- a/clients/TypeScript/packages/client/package.json
+++ b/clients/TypeScript/packages/client/package.json
@@ -1,6 +1,6 @@
{
"name": "@cardano-ogmios/client",
- "version": "4.2.0",
+ "version": "4.2.1",
"description": "TypeScript client library for Cardano Ogmios",
"engines": {
"node": "^14"
@@ -51,7 +51,7 @@
"typescript": "^4.2.3"
},
"dependencies": {
- "@cardano-ogmios/schema": "4.2.0",
+ "@cardano-ogmios/schema": "4.2.1",
"@cardanosolutions/json-bigint": "^1.0.0",
"@types/json-bigint": "^1.0.1",
"cross-fetch": "^3.1.4",
diff --git a/clients/TypeScript/packages/repl/package.json b/clients/TypeScript/packages/repl/package.json
index 2732d836e7..bed481940e 100644
--- a/clients/TypeScript/packages/repl/package.json
+++ b/clients/TypeScript/packages/repl/package.json
@@ -1,6 +1,6 @@
{
"name": "@cardano-ogmios/repl",
- "version": "4.2.0",
+ "version": "4.2.1",
"description": "REPL for Cardano Ogmios",
"engines": {
"node": "^14"
@@ -39,7 +39,7 @@
"typescript": "^4.2.3"
},
"dependencies": {
- "@cardano-ogmios/client": "4.2.0",
+ "@cardano-ogmios/client": "4.2.1",
"chalk": "^4.1.0",
"yargs-parser": "^20.2.7"
},
diff --git a/clients/TypeScript/packages/schema/package.json b/clients/TypeScript/packages/schema/package.json
index 1c1b24dff8..854473099f 100644
--- a/clients/TypeScript/packages/schema/package.json
+++ b/clients/TypeScript/packages/schema/package.json
@@ -1,6 +1,6 @@
{
"name": "@cardano-ogmios/schema",
- "version": "4.2.0",
+ "version": "4.2.1",
"description": "Generated TypeScript from the Cardano Ogmios schema",
"engines": {
"node": "^14"
diff --git a/server/ogmios.cabal b/server/ogmios.cabal
index 7d34714616..cf90d8a9d7 100644
--- a/server/ogmios.cabal
+++ b/server/ogmios.cabal
@@ -5,7 +5,7 @@ cabal-version: 2.0
-- see: https://github.com/sol/hpack
name: ogmios
-version: 4.2.0
+version: 4.2.1
synopsis: A JSON-WSP WebSocket client for cardano-node
description: Please see the README on GitHub at
category: Web
diff --git a/server/package.yaml b/server/package.yaml
index 7900c8fc74..2ee012ef0f 100644
--- a/server/package.yaml
+++ b/server/package.yaml
@@ -1,7 +1,7 @@
_config: !include ".hpack.config.yaml"
name: ogmios
-version: 4.2.0
+version: 4.2.1
stability: stable
github: "cardanosolutions/ogmios"
license: MPL-2.0