changelog

CHANGELOG.md

@@ -9,6 +9,8 @@
   - This will reduce the number of spans created by the SDK
 - `options.experimental.sessionReplay.errorSampleRate` was renamed to `options.experimental.sessionReplay.onErrorSampleRate` ([#3637](https://github.com/getsentry/sentry-java/pull/3637))
 - Manifest option `io.sentry.session-replay.error-sample-rate` was renamed to `io.sentry.session-replay.on-error-sample-rate` ([#3637](https://github.com/getsentry/sentry-java/pull/3637))
+- Replace `synchronized` methods and blocks with `ReentrantLock` (`AutoClosableReentrantLock`) ([#3715](https://github.com/getsentry/sentry-java/pull/3715))
+  - If you are subclassing any Sentry classes, please check if the parent class used `synchronized` before. Please make sure to use the same lock object as the parent class in that case. 
 
 ### Features