diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13e51cc34a924..9497c8712f726 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -110,6 +110,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Handle negative search request nodes stats ([#19340](https://github.com/opensearch-project/OpenSearch/pull/19340))
 - Remove unnecessary iteration per-shard in request cache cleanup ([#19263](https://github.com/opensearch-project/OpenSearch/pull/19263))
 - Fix derived field rewrite to handle range queries ([#19496](https://github.com/opensearch-project/OpenSearch/pull/19496))
+- Fix flaky IndexServiceTests.testAsyncTranslogTrimTaskOnClosedIndex ([#19492](https://github.com/opensearch-project/OpenSearch/pull/19492)))
 
 ### Dependencies
 - Bump `com.gradleup.shadow:shadow-gradle-plugin` from 8.3.5 to 8.3.9 ([#19400](https://github.com/opensearch-project/OpenSearch/pull/19400))
diff --git a/server/src/main/java/org/opensearch/index/engine/NoOpEngine.java b/server/src/main/java/org/opensearch/index/engine/NoOpEngine.java
index 0af2c8d72b1fd..7795815f9dc32 100644
--- a/server/src/main/java/org/opensearch/index/engine/NoOpEngine.java
+++ b/server/src/main/java/org/opensearch/index/engine/NoOpEngine.java
@@ -170,7 +170,7 @@ public TranslogManager translogManager() {
                 public void trimUnreferencedTranslogFiles() throws TranslogException {
                     final Store store = engineConfig.getStore();
                     store.incRef();
-                    try (ReleasableLock ignored = readLock.acquire()) {
+                    try (ReleasableLock ignored = writeLock.acquire()) {
                         ensureOpen();
                         final List<IndexCommit> commits = DirectoryReader.listCommits(store.directory());
                         if (commits.size() == 1 && translogStats.getTranslogSizeInBytes() > translogStats.getUncommittedSizeInBytes()) {