diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 02f17d9..76d5538 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.8.1"
+  ".": "0.9.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..c371878
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,21 @@
+# Changelog
+
+## [0.9.0](https://github.com/ChromeDevTools/source-map-scopes-codec/compare/@chrome-devtools/source-map-scopes-codec-v0.8.1...@chrome-devtools/source-map-scopes-codec-v0.9.0) (2026-08-13)
+
+
+### Features
+
+* Add indicator in decoding result whether variables and binding expressions are present ([#3](https://github.com/ChromeDevTools/source-map-scopes-codec/issues/3)) ([3d0a2a5](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/3d0a2a555e3ec10699d7adeb1aa2ee44addc38ed))
+* Add support for index source maps ([958ddcc](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/958ddcc2412683243842eedcfd32a1623688860f))
+* Implement new vendor extension items and invalid items ([731ec13](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/731ec1343e0d5483d7fd7f293bf5c18da3d4d93a))
+* Nil top-level original scopes use an empty tag now ([e73b2d1](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/e73b2d15c699cf2f29d7dbb4b19103341c5aeb0d))
+* Use 1-based unsigned VLQs for binding expressions ([32bc5b7](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/32bc5b72c8ed78d5e2ac148b1c1bc718bc87320d))
+
+
+### Bug Fixes
+
+* align sub-range binding with current spec text ([#5](https://github.com/ChromeDevTools/source-map-scopes-codec/issues/5)) ([a0d078c](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/a0d078c6d86d572429ed738a74d61dcfd1517df6))
+* Associate sub-range bindings with the correct range ([888bc72](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/888bc72ae22baa3b4a525fb8d51f8ef4ce06978c)), closes [#1](https://github.com/ChromeDevTools/source-map-scopes-codec/issues/1)
+* Don't reset decoding state between top-level ranges ([ae534f7](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/ae534f7de09a498e1466c0224ca7816f589ac4de))
+* Re-encode benchmark maps after ranges support was implemented ([d19865b](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/d19865b87783d8f6ae48ef50c6879345e57695fd))
+* Rename scopes.d.ts to scopes.ts ([b5faea1](https://github.com/ChromeDevTools/source-map-scopes-codec/commit/b5faea15b438cfcc49097317d03fdad0cce87e64))
diff --git a/deno.json b/deno.json
index b1f0e92..f5f5fc6 100644
--- a/deno.json
+++ b/deno.json
@@ -1,10 +1,13 @@
 {
   "name": "@chrome-devtools/source-map-scopes-codec",
-  "version": "0.8.1",
+  "version": "0.9.0",
   "exports": "./src/mod.ts",
   "license": "BSD-3-Clause",
   "fmt": {
-    "exclude": ["README.md", "CONTRIBUTING.md"]
+    "exclude": [
+      "README.md",
+      "CONTRIBUTING.md"
+    ]
   },
   "publish": {
     "include": [