diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4073dddc1..626a80dc9 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,7 +1,7 @@
 {
   "packages/nest": "0.2.1-experimental",
   "packages/react": "0.4.1",
-  "packages/client": "1.2.0",
+  "packages/client": "1.2.1",
   "packages/server": "1.15.0",
   "packages/shared": "1.3.0"
 }
diff --git a/packages/client/CHANGELOG.md b/packages/client/CHANGELOG.md
index 515614872..bcb94ec8f 100644
--- a/packages/client/CHANGELOG.md
+++ b/packages/client/CHANGELOG.md
@@ -1,6 +1,13 @@
 # Changelog
 
 
+## [1.2.1](https://github.com/open-feature/js-sdk/compare/web-sdk-v1.2.0...web-sdk-v1.2.1) (2024-06-12)
+
+
+### 🐛 Bug Fixes
+
+* **web-sdk:** pin core version to 1.3.0 ([#964](https://github.com/open-feature/js-sdk/issues/964)) ([3cde37a](https://github.com/open-feature/js-sdk/commit/3cde37a5ee29e71a0eb3fd8680b081d865a588f9))
+
 ## [1.2.0](https://github.com/open-feature/js-sdk/compare/web-sdk-v1.1.0...web-sdk-v1.2.0) (2024-06-11)
 
 
diff --git a/packages/client/README.md b/packages/client/README.md
index 4be4126dd..54ac14020 100644
--- a/packages/client/README.md
+++ b/packages/client/README.md
@@ -16,8 +16,8 @@
     <img alt="Specification" src="https://img.shields.io/static/v1?label=specification&message=v0.8.0&color=yellow&style=for-the-badge" />
   </a>
   <!-- x-release-please-start-version -->
-  <a href="https://github.com/open-feature/js-sdk/releases/tag/web-sdk-v1.2.0">
-    <img alt="Release" src="https://img.shields.io/static/v1?label=release&message=v1.2.0&color=blue&style=for-the-badge" />
+  <a href="https://github.com/open-feature/js-sdk/releases/tag/web-sdk-v1.2.1">
+    <img alt="Release" src="https://img.shields.io/static/v1?label=release&message=v1.2.1&color=blue&style=for-the-badge" />
   </a>
   <!-- x-release-please-end -->
   <br/>
diff --git a/packages/client/package.json b/packages/client/package.json
index f85eba321..e6c7fd1c1 100644
--- a/packages/client/package.json
+++ b/packages/client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@openfeature/web-sdk",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "OpenFeature SDK for Web",
   "main": "./dist/cjs/index.js",
   "files": [