diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7383ca0..76aca5a3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,41 @@
+# 0.9.0 (4 December 2020)
+
+This release adds multiple changes and new features:
+
+- New `--environment` option on `carton test`, which when passed `--environment defaultBrowser` runs
+  test suites of a given package in your default browser, allowing you to use JavaScriptKit and
+  other browser-specific dependencies in your tests. Another available option is `--environment wasmer`, which is the old and still the default behavior, which runs the test suite in `wasmer`.
+
+- Now when your SwiftWasm app crashes in Firefox, the strack trace will printed by `carton dev` and
+  `carton test` in terminal with function symbols demangled, which makes crashes much easier to
+  debug. Since different browsers format their stack traces differently, support for browsers other
+  than Firefox will be added separately in a future version of `carton`.
+
+- `carton dev` and `carton bundle` now serve SwiftPM resources declared on targets of executable
+  products from the root `/` path, in addition to a subpath automatically generated for
+  `Bundle.module`. This was a necessary change [to allow the `Image`
+  view](https://github.com/TokamakUI/Tokamak/pull/155#issuecomment-723677472) to work properly in
+  [Tokamak](https://github.com/TokamakUI/Tokamak).
+
+- Support for [JavaScriptKit](https://github.com/swiftwasm/javascriptkit) 0.9.0, which allows
+  catching JavaScript exceptions in Swift code.
+
+- The default SwiftWasm toolchain is now 5.3.1, which is a recommended bugfix update for all of our
+  users.
+
+**Merged pull requests:**
+
+- Mark all commands as implemented in `README.md` ([#180](https://github.com/swiftwasm/carton/pull/180)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Bump versions of libraries in `Template.swift` ([#182](https://github.com/swiftwasm/carton/pull/182)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Serve main bundle resources from root directory ([#176](https://github.com/swiftwasm/carton/pull/176)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Use `FileDownloadDelegate` from the AHC package ([#171](https://github.com/swiftwasm/carton/pull/171)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Bump JSKit, add support for testing in browsers ([#173](https://github.com/swiftwasm/carton/pull/173)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Update dependencies ([#179](https://github.com/swiftwasm/carton/pull/179)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Bump `defaultToolchainVersion` to 5.3.1 ([#178](https://github.com/swiftwasm/carton/pull/178)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Demangle and print Firefox stack traces in terminal ([#162](https://github.com/swiftwasm/carton/pull/162)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Update dependencies ([#172](https://github.com/swiftwasm/carton/pull/172)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+- Update dependencies ([#170](https://github.com/swiftwasm/carton/pull/170)) via [@MaxDesiatov](https://github.com/MaxDesiatov)
+
 # 0.8.2 (9 November 2020)
 
 This patch release updates the default version of Tokamak in the `carton init` template to fix autocomplete in Xcode.
diff --git a/README.md b/README.md
index 34e1f5fe..655da6a8 100644
--- a/README.md
+++ b/README.md
@@ -11,14 +11,13 @@ It currently supports these features with separate commands:
 - Optimizing and packaging the app for distribution with `carton bundle`.
 - Managing SwiftWasm toolchain and SDK installations with `carton sdk`.
 
-It is currently work in progress, so watch the repository for imminent updates!
-
 ## Motivation
 
-The main motivation for `carton` came after I had enough struggles with [webpack.js](https://webpack.js.org),
-trying to make its config file work, looking for appropriate plugins. I'm convinced that the required use of
-`webpack` in SwiftWasm projects could limit the wider adoption of SwiftWasm itself. Hopefully, with `carton`
-you can avoid using `webpack` altogether. `carton` also simplifies a few other things in your SwiftWasm
+The main motivation for `carton` came after having enough struggles with
+[webpack.js](https://webpack.js.org), trying to make its config file work, looking for appropriate
+plugins. At some point the maintainers became convinced that the required use of `webpack` in
+SwiftWasm projects could limit the wider adoption of SwiftWasm itself. Hopefully, with `carton` you
+can avoid using `webpack` altogether. `carton` also simplifies a few other things in your SwiftWasm
 development workflow such as toolchain and SDK installations.
 
 ## Getting started
diff --git a/Sources/CartonHelpers/Version.swift b/Sources/CartonHelpers/Version.swift
index f11df387..b8e991ee 100644
--- a/Sources/CartonHelpers/Version.swift
+++ b/Sources/CartonHelpers/Version.swift
@@ -12,4 +12,4 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-public let cartonVersion = "0.8.2"
+public let cartonVersion = "0.9.0"
diff --git a/Tests/CartonTests/CartonTests.swift b/Tests/CartonTests/CartonTests.swift
index 5084707d..7a83d1ee 100644
--- a/Tests/CartonTests/CartonTests.swift
+++ b/Tests/CartonTests/CartonTests.swift
@@ -55,7 +55,7 @@ final class CartonTests: XCTestCase {
     let data = pipe.fileHandleForReading.readDataToEndOfFile()
     let output = String(data: data, encoding: .utf8)
 
-    XCTAssertEqual(output?.trimmingCharacters(in: .whitespacesAndNewlines), "0.8.2")
+    XCTAssertEqual(output?.trimmingCharacters(in: .whitespacesAndNewlines), "0.9.0")
   }
 
   final class TestOutputStream: OutputByteStream {
diff --git a/package-lock.json b/package-lock.json
index 5871ccbb..1acab354 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,11 +1,11 @@
 {
   "name": "carton",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "version": "0.8.2",
+      "version": "0.9.0",
       "license": "Apache-2.0",
       "devDependencies": {
         "@wasmer/wasi": "^0.12.0",
diff --git a/package.json b/package.json
index 2c61de20..aee59170 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "carton",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "description": "📦 Watcher, bundler, and test runner for your SwiftWasm apps ",
   "main": "index.js",
   "scripts": {