diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce05cfb..8f5e15c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [2.0.0](https://github.com/mljs/kernel-sigmoid/compare/v1.1.0...v2.0.0) (2026-06-06)
+
+
+### ⚠ BREAKING CHANGES
+
+* the package no longer has a default export. Replace `import SigmoidKernel from 'ml-kernel-sigmoid'` with `import { SigmoidKernel } from 'ml-kernel-sigmoid'`.
+
+### Features
+
+* use a named export instead of a default export ([a35bf54](https://github.com/mljs/kernel-sigmoid/commit/a35bf542d7fb50c4a49a6488743a094aeaf4bcb6))
+
 ## [1.1.0](https://github.com/mljs/kernel-sigmoid/compare/v1.0.1...v1.1.0) (2026-06-06)
 
 
diff --git a/package.json b/package.json
index 6e44912..4d3626c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ml-kernel-sigmoid",
-  "version": "1.1.0",
+  "version": "2.0.0",
   "description": "Sigmoid (hyperbolic tangent) kernel",
   "type": "module",
   "exports": {