diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..13175116
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,4 @@
+# Changelog
+
+* `stellar-base` changelog: [base/CHANGELOG.md](https://github.com/astroband/ruby-stellar-sdk/blob/main/base/CHANGELOG.md)
+* `stellar-sdk` changelog: [sdk/CHANGELOG.md](https://github.com/astroband/ruby-stellar-sdk/blob/main/sdk/CHANGELOG.md)
diff --git a/Gemfile.lock b/Gemfile.lock
index b5aa7b60..b0407b57 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: base
   specs:
-    stellar-base (0.27.0)
+    stellar-base (0.28.0)
       activesupport (>= 5.0.0, < 7.0)
       base32 (>= 0.3.0, < 1.0)
       digest-crc (>= 0.5.0, < 1.0)
@@ -11,11 +11,11 @@ PATH
 PATH
   remote: sdk
   specs:
-    stellar-sdk (0.27.0)
+    stellar-sdk (0.28.0)
       activesupport (>= 5.0.0, < 7.0)
       excon (>= 0.71.0, < 1.0)
       hyperclient (>= 0.7.0, < 2.0)
-      stellar-base (= 0.27.0)
+      stellar-base (= 0.28.0)
       toml-rb (>= 1.1.1, < 3.0)
 
 GEM
@@ -73,7 +73,6 @@ GEM
     faraday_middleware (1.0.0)
       faraday (~> 1.0)
     ffi (1.15.0)
-    ffi (1.15.0-java)
     formatador (0.2.5)
     gem-release (2.2.2)
     guard (2.16.2)
@@ -121,10 +120,6 @@ GEM
     pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    pry (0.14.1-java)
-      coderay (~> 1.1)
-      method_source (~> 1.0)
-      spoon (~> 0.0)
     pry-doc (1.1.0)
       pry (~> 0.11)
       yard (~> 0.9.11)
@@ -181,8 +176,6 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.3)
     slop (3.6.0)
-    spoon (0.0.6)
-      ffi
     standard (1.1.5)
       rubocop (= 1.18.3)
       rubocop-performance (= 1.11.4)
diff --git a/base/CHANGELOG.md b/base/CHANGELOG.md
index c2fb1e22..caa29899 100644
--- a/base/CHANGELOG.md
+++ b/base/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 As this project is pre 1.0, breaking changes may happen for minor version
 bumps.  A breaking change will get clearly notified in this log.
 
+## [0.28.0](https://www.github.com/astroband/ruby-stellar-sdk/compare/v0.27.0...v0.28.0) (2021-07-17)
+
+### Features
+
+* support muxed accounts in tx builder ([#162](https://www.github.com/astroband/ruby-stellar-sdk/issues/162)) ([37cd954](https://www.github.com/astroband/ruby-stellar-sdk/commit/37cd954f92c7999a74ca779e795dde74a3d71aad))
+
 ## [0.27.0](https://github.com/astroband/ruby-stellar-sdk/compare/v0.26.0...v0.27.0) (2021-05-08)
 
 ### Features
diff --git a/base/lib/stellar/version.rb b/base/lib/stellar/version.rb
index 0f0e36ae..82307d91 100644
--- a/base/lib/stellar/version.rb
+++ b/base/lib/stellar/version.rb
@@ -1,3 +1,3 @@
 module Stellar
-  VERSION = "0.27.0"
+  VERSION = "0.28.0"
 end
diff --git a/sdk/CHANGELOG.md b/sdk/CHANGELOG.md
index 9c99e01f..aed92080 100644
--- a/sdk/CHANGELOG.md
+++ b/sdk/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.28.0](https://www.github.com/astroband/ruby-stellar-sdk/compare/v0.27.0...v0.28.0) (2021-07-17)
+
+### Changed
+* `Stellar::Account` class is now part of `stellar-base` gem
+* `Stellar::Account.lookup` is deprecated, use `Stellar::Federation.lookup` instead
+
 ## [0.27.0](https://github.com/astroband/ruby-stellar-sdk/compare/v0.26.0...v0.27.0) (2021-05-08)
 - No changes