diff --git a/CHANGELOG.md b/CHANGELOG.md
index 85b4634e..d6837398 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [2.15.1](https://github.com/rive-app/rive-wasm/compare/2.15.0...2.15.1)
+## [2.15.2](https://github.com/rive-app/rive-wasm/compare/2.15.1...2.15.2)
+
+### Commits
+
+- add observer polyfill [`67e826a`](https://github.com/rive-app/rive-wasm/commit/67e826adec0dbf6df33890bd06739c9f1200d9ce)
+
+## [2.15.1](https://github.com/rive-app/rive-wasm/compare/2.15.0...2.15.1) - 2024-04-30
 
 ### Fixed
 
@@ -13,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Commits
 
+- chore: tag 2.15.1 [`7a30128`](https://github.com/rive-app/rive-wasm/commit/7a301282472a3a14679db3e2dfa5909d4a659555)
 - GameKit on Windows [`dcf28ad`](https://github.com/rive-app/rive-wasm/commit/dcf28addd6e04a5702004615260a8a5a30659799)
 - add resize observer for rive instances [`1904dfa`](https://github.com/rive-app/rive-wasm/commit/1904dfabe3d4845388b0609b33643dd73e743b3e)
 - initialize audio manager only if an instance needs it [`759dc45`](https://github.com/rive-app/rive-wasm/commit/759dc4542dc926c7cd9772f309e081f9ba3d59a0)
diff --git a/js/npm/canvas/package.json b/js/npm/canvas/package.json
index f7031873..7757b9d0 100644
--- a/js/npm/canvas/package.json
+++ b/js/npm/canvas/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/canvas",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's canvas based web api.",
   "main": "rive.js",
   "homepage": "https://rive.app",
diff --git a/js/npm/canvas_advanced/package.json b/js/npm/canvas_advanced/package.json
index 87430a13..aaed6f75 100644
--- a/js/npm/canvas_advanced/package.json
+++ b/js/npm/canvas_advanced/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/canvas-advanced",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's lightweight low-level canvas based web api.",
   "main": "canvas_advanced.mjs",
   "homepage": "https://rive.app",
diff --git a/js/npm/canvas_advanced_lite/package.json b/js/npm/canvas_advanced_lite/package.json
index f5c5bb4b..4d8d70ca 100644
--- a/js/npm/canvas_advanced_lite/package.json
+++ b/js/npm/canvas_advanced_lite/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/canvas-advanced-lite",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's lite low-level canvas based web api.",
   "main": "canvas_advanced.mjs",
   "homepage": "https://rive.app",
diff --git a/js/npm/canvas_advanced_single/package.json b/js/npm/canvas_advanced_single/package.json
index 212007b4..172eba93 100644
--- a/js/npm/canvas_advanced_single/package.json
+++ b/js/npm/canvas_advanced_single/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/canvas-advanced-single",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's lightweight low-level canvas based web api all in one js file.",
   "main": "canvas_advanced_single.mjs",
   "homepage": "https://rive.app",
diff --git a/js/npm/canvas_lite/package.json b/js/npm/canvas_lite/package.json
index 65759009..acd573b6 100644
--- a/js/npm/canvas_lite/package.json
+++ b/js/npm/canvas_lite/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/canvas-lite",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "A lite version of Rive's canvas based web api.",
   "main": "rive.js",
   "homepage": "https://rive.app",
diff --git a/js/npm/canvas_single/package.json b/js/npm/canvas_single/package.json
index a7001174..e7ec185f 100644
--- a/js/npm/canvas_single/package.json
+++ b/js/npm/canvas_single/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/canvas-single",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's high-level canvas based web api all in one js file.",
   "main": "rive.js",
   "homepage": "https://rive.app",
diff --git a/js/npm/webgl/package.json b/js/npm/webgl/package.json
index 4b9e7fbb..fb410da0 100644
--- a/js/npm/webgl/package.json
+++ b/js/npm/webgl/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/webgl",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's webgl based web api.",
   "main": "rive.js",
   "homepage": "https://rive.app",
diff --git a/js/npm/webgl2/package.json b/js/npm/webgl2/package.json
index b814b8e8..3b32a85e 100644
--- a/js/npm/webgl2/package.json
+++ b/js/npm/webgl2/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/webgl2",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's webgl2 based web api.",
   "main": "rive.js",
   "homepage": "https://rive.app",
diff --git a/js/npm/webgl2_advanced/package.json b/js/npm/webgl2_advanced/package.json
index f70eda44..cffb473a 100644
--- a/js/npm/webgl2_advanced/package.json
+++ b/js/npm/webgl2_advanced/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/webgl2-advanced",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's webgl2 low-level canvas based web api.",
   "main": "webgl2_advanced.mjs",
   "homepage": "https://rive.app",
diff --git a/js/npm/webgl_advanced/package.json b/js/npm/webgl_advanced/package.json
index d25739c0..74b0cd0e 100644
--- a/js/npm/webgl_advanced/package.json
+++ b/js/npm/webgl_advanced/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/webgl-advanced",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's webgl low-level canvas based web api.",
   "main": "webgl_advanced.mjs",
   "homepage": "https://rive.app",
diff --git a/js/npm/webgl_advanced_single/package.json b/js/npm/webgl_advanced_single/package.json
index 3e0e12f0..c3f54ab3 100644
--- a/js/npm/webgl_advanced_single/package.json
+++ b/js/npm/webgl_advanced_single/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/webgl-advanced-single",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's webgl low-level canvas based web api all in one js file.",
   "main": "webgl_advanced_single.mjs",
   "homepage": "https://rive.app",
diff --git a/js/npm/webgl_single/package.json b/js/npm/webgl_single/package.json
index e40820f0..6845a097 100644
--- a/js/npm/webgl_single/package.json
+++ b/js/npm/webgl_single/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rive-app/webgl-single",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Rive's webgl based web api with bundled wasm.",
   "main": "rive.js",
   "homepage": "https://rive.app",
diff --git a/js/package-lock.json b/js/package-lock.json
index 528a911f..23ebb7bf 100644
--- a/js/package-lock.json
+++ b/js/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@rive-app/canvas",
-  "version": "2.15.1",
+  "version": "2.15.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@rive-app/canvas",
-      "version": "2.15.1",
+      "version": "2.15.2",
       "license": "MIT",
       "devDependencies": {
         "@babel/core": "^7.14.3",
diff --git a/js/package.json b/js/package.json
index 6d5a7471..e8405d52 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@rive-app/canvas",
   "private": true,
-  "version": "2.15.1",
+  "version": "2.15.2",
   "description": "Helper for building rive-api combinations (multiple separate packages).",
   "homepage": "https://rive.app",
   "repository": {