diff --git a/packages/typescript/CHANGELOG.md b/packages/typescript/CHANGELOG.md
index 43a80744d..e37cd8d34 100644
--- a/packages/typescript/CHANGELOG.md
+++ b/packages/typescript/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @rollup/plugin-typescript ChangeLog
 
+## v12.1.0
+
+_2024-09-22_
+
+### Features
+
+- feat: add transformers factory. (#1668)
+
 ## v12.0.0
 
 _2024-09-22_
diff --git a/packages/typescript/package.json b/packages/typescript/package.json
index dd334cc9e..3504f38e3 100644
--- a/packages/typescript/package.json
+++ b/packages/typescript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rollup/plugin-typescript",
-  "version": "12.0.0",
+  "version": "12.1.0",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/typescript/test/fixtures/incremental-watch-off/main.ts b/packages/typescript/test/fixtures/incremental-watch-off/main.ts
index 030ec54f0..9ccd4a12d 100644
--- a/packages/typescript/test/fixtures/incremental-watch-off/main.ts
+++ b/packages/typescript/test/fixtures/incremental-watch-off/main.ts
@@ -4,5 +4,3 @@ const answer: AnswerToQuestion = '42';
 
 // eslint-disable-next-line no-console
 console.log(`the answer is ${answer}`);
-
-export const REBUILD_WITH_WATCH_OFF = 1;
\ No newline at end of file