diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 5fdd883..c3f1463 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.1.0"
+  ".": "1.2.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..51d927c
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,14 @@
+# Changelog
+
+## [1.2.0](https://github.com/tokentopapp/plugin-sdk/compare/v1.1.0...v1.2.0) (2026-02-27)
+
+
+### Features
+
+* add estimatedDaily/estimatedMonthly to ProviderUsageData cost ([87036d5](https://github.com/tokentopapp/plugin-sdk/commit/87036d521671243f6f51576e566013b84f546ee8))
+* align theme types with core — flat ThemePlugin, ColorScheme exports ([c3b856b](https://github.com/tokentopapp/plugin-sdk/commit/c3b856b537dd720cf01d9d5041bc20e5b80976bd))
+
+
+### Bug Fixes
+
+* add bootstrap-sha to prevent stale changelog entries ([e654aad](https://github.com/tokentopapp/plugin-sdk/commit/e654aadad24efbecff3f5ebde646ba819605ad04))
diff --git a/package.json b/package.json
index 1788001..ccece7a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tokentop/plugin-sdk",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "SDK for building tokentop plugins — providers, agents, themes, and notifications",
   "type": "module",
   "main": "dist/index.js",