diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d9a07c..714ae45 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,21 @@ for now removed features.
 
 for any bug fixes.
 
+## [0.4.0] - 2022-10-21
+
+### Changed
+
+- (Breaking): rename ImmutableXCore to ImmutableX
+This follows the new spec for the core SDKs that will come to swift shortly.
+
+- (Breaking): replace ropsten environment for sandbox
+Ropsten has been deprecated and won't work anymore. Sandbox is the preferred testing environment.
+
+### Fixed
+
+- re-include macos as a Cocoapods target
+The Core SDK is generic enough that it should work on macOS. It had accidentally been removed on 0.3.1.
+
 ## [0.3.1] - 2022-10-19
 
 ### Removed
diff --git a/ImmutableXCore.podspec b/ImmutableXCore.podspec
index 4e081d7..b1446d6 100644
--- a/ImmutableXCore.podspec
+++ b/ImmutableXCore.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
     spec.name                  = 'ImmutableXCore'
-    spec.version               = '0.3.1'
+    spec.version               = '0.4.0'
     spec.summary               = 'The Immutable X Core SDK Swift for applications written on the Immutable X platform.'
 
     spec.description           = <<-DESC
@@ -12,7 +12,7 @@ Pod::Spec.new do |spec|
     spec.license               = { :type => 'Apache License 2.0', :file => 'LICENSE' }
     spec.author                = { 'Immutable' => 'opensource@immutable.com'}
 
-    spec.source                = { :git => 'https://github.com/immutable/imx-core-sdk-swift.git', :tag => "v0.3.1" }
+    spec.source                = { :git => 'https://github.com/immutable/imx-core-sdk-swift.git', :tag => "v0.4.0" }
     spec.source_files          = 'Sources/**/*.swift'
 
     spec.swift_version         = '5.7'
diff --git a/README.md b/README.md
index 5adc908..4b916fc 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ In your `Package.swift`:
 
 ```swift
 dependencies: [
-    .package(url: "https://github.com/immutable/imx-core-sdk-swift.git", from: "0.3.1")
+    .package(url: "https://github.com/immutable/imx-core-sdk-swift.git", from: "0.4.0")
 ]
 ```
 
diff --git a/Sources/ImmutableXCore/ImmutableX.swift b/Sources/ImmutableXCore/ImmutableX.swift
index 1e50ca4..c4721a9 100644
--- a/Sources/ImmutableXCore/ImmutableX.swift
+++ b/Sources/ImmutableXCore/ImmutableX.swift
@@ -27,7 +27,7 @@ public struct ImmutableX {
     public var logLevel: ImmutableXHTTPLoggingLevel
 
     /// Returns the version of the sdk
-    internal var sdkVersion: String = "0.3.1"
+    internal var sdkVersion: String = "0.4.0"
 
     private let buyWorkflow: BuyWorkflow.Type
     private let sellWorkflow: SellWorkflow.Type
diff --git a/Tests/ImmutableXCoreTests/ImmutableXTests.swift b/Tests/ImmutableXCoreTests/ImmutableXTests.swift
index cc8f90e..9404eb3 100644
--- a/Tests/ImmutableXCoreTests/ImmutableXTests.swift
+++ b/Tests/ImmutableXCoreTests/ImmutableXTests.swift
@@ -47,7 +47,7 @@ final class ImmutableXTests: XCTestCase {
     }
 
     func testSdkVersion() {
-        XCTAssertEqual(ImmutableX.shared.sdkVersion, "0.3.1")
+        XCTAssertEqual(ImmutableX.shared.sdkVersion, "0.4.0")
     }
 
     func testInitialize() {