diff --git a/plugins/cache-ehcache/src/test/java/org/opensearch/cache/store/disk/EhCacheDiskCacheTests.java b/plugins/cache-ehcache/src/test/java/org/opensearch/cache/store/disk/EhCacheDiskCacheTests.java
index c40c937d223ad..06ebed08d7525 100644
--- a/plugins/cache-ehcache/src/test/java/org/opensearch/cache/store/disk/EhCacheDiskCacheTests.java
+++ b/plugins/cache-ehcache/src/test/java/org/opensearch/cache/store/disk/EhCacheDiskCacheTests.java
@@ -807,6 +807,7 @@ public void testInvalidateWithDropDimensions() throws Exception {
                 .setStoragePath(env.nodePaths()[0].indicesPath.toString() + "/request_cache")
                 .setKeySerializer(new StringSerializer())
                 .setValueSerializer(new StringSerializer())
+                .setIsEventListenerModeSync(true)
                 .setDimensionNames(dimensionNames)
                 .setKeyType(String.class)
                 .setValueType(String.class)