diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3901bcd..84de019 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,47 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 (modification: no type change headlines) and this project adheres to
 [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [1.1.0] - 2019-02-04
+
+**Petersburg Hardfork Support**
+
+This release now supports the new `Petersburg` (aka
+`constantinopleFix`) HF removing support for [EIP 1283](https://eips.ethereum.org/EIPS/eip-1283). `Petersburg` is conceptualized
+within the library as a separate delta-containing HF, only removing `EIP 1283`
+support and containing nothing else. It should therefore always be applied
+together with the `Constantinople` HF, either by using the same block number to
+update on both (`mainnet` scenario) or applying subsequently on subsequent
+block numbers (`ropsten` scenario).
+
+HF related changes (from PR [#44](https://github.com/ethereumjs/ethereumjs-common/pull/44)):
+
+- New `hardforks/petersburg.json` HF file
+- `constantinople` and `petersburg` block numbers for `ropsten` and `mainnet`
+- Updated tests, new `petersburg` related tests
+
+**Launched/Final Goerli Configuration Support**
+
+The release now supports the final [Goerli](https://github.com/goerli/testnet)
+cross-client testnet configuration.
+
+Goerli related changes (from PR [#48](https://github.com/ethereumjs/ethereumjs-common/pull/48)):
+
+- Updated `chains/goerli.json` configuration file (`chainId` -> 5,
+  `networkId` -> 5, genesis parameters)
+- HF block numbers up to `petersburg` hardfork
+- Updated bootstrap nodes
+- Updated `genesisStates/goerli.json` genesis state
+- Test updates
+
+**Other Changes**
+
+- Fixed a bug in `hardforkGteHardfork()` where non-active hardforks were considered equal to `chainstart` when `onlyActive` is passed, see
+  PR [#44](https://github.com/ethereumjs/ethereumjs-common/pull/44)
+- Use CLI scripts from ethereumjs-config in package.json, PR
+  [#43](https://github.com/ethereumjs/ethereumjs-common/pull/43)
+
+[1.1.0]: https://github.com/ethereumjs/ethereumjs-common/compare/v1.0.0...v1.1.0
+
 ## [1.0.0] - 2019-01-23
 
 First `TypeScript` based release of the library (for details see
diff --git a/README.md b/README.md
index 1d7b02c..87c9da7 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ It is encouraged to also explicitly set the `supportedHardforks` if the initiali
 only supports a certain range of `hardforks`:
 
 ```javascript
-let c = new Common('ropsten', null, ['byzantium', 'constantinople'])
+let c = new Common('ropsten', null, ['byzantium', 'constantinople', 'petersburg'])
 ```
 
 This will e.g. throw an error when a param is requested for an unsupported hardfork and
@@ -58,7 +58,7 @@ depending hardfork parameters. There are also additional helper functions like
 `paramByBlock (topic, name, blockNumber)` or `hardforkIsActiveOnBlock (hardfork, blockNumber)`
 to ease `blockNumber` based access to parameters.
 
-- [API Docs](./docs/Readme.md)
+- [API Docs](./docs/README.md)
 
 # Hardfork Params
 
@@ -72,6 +72,7 @@ library supported:
 - `spuriousDragon`
 - `byzantium`
 - `constantinople`
+- `petersburg` (aka `constantinopleFix`, apply together with `constantinople`)
 
 For hardfork-specific parameter access with the `param()` and `paramByBlock()` functions
 you can use the following `topics`:
@@ -101,7 +102,7 @@ Supported chains:
 - `ropsten`
 - `rinkeby`
 - `kovan`
-- `goerli` (EXPERIMENTAL)
+- `goerli` (final configuration since `v1.1.0`)
 - Private/custom chain parameters
 
 The following chain-specific parameters are provided:
diff --git a/package.json b/package.json
index f90d8ab..1b28281 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ethereumjs-common",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Resources common to all Ethereum implementations",
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",