diff --git a/server/src/internalClusterTest/java/org/opensearch/search/fetch/subphase/highlight/HighlighterSearchIT.java b/server/src/internalClusterTest/java/org/opensearch/search/fetch/subphase/highlight/HighlighterSearchIT.java
index 5bfc556bb629e..f449a91a57279 100644
--- a/server/src/internalClusterTest/java/org/opensearch/search/fetch/subphase/highlight/HighlighterSearchIT.java
+++ b/server/src/internalClusterTest/java/org/opensearch/search/fetch/subphase/highlight/HighlighterSearchIT.java
@@ -32,6 +32,7 @@
 package org.opensearch.search.fetch.subphase.highlight;
 
 import com.carrotsearch.randomizedtesting.annotations.ParametersFactory;
+import com.carrotsearch.randomizedtesting.annotations.TimeoutSuite;
 import com.carrotsearch.randomizedtesting.generators.RandomPicks;
 
 import org.apache.lucene.analysis.Analyzer;
@@ -41,6 +42,7 @@
 import org.apache.lucene.search.join.ScoreMode;
 import org.apache.lucene.tests.analysis.MockAnalyzer;
 import org.apache.lucene.tests.analysis.MockTokenizer;
+import org.apache.lucene.tests.util.TimeUnits;
 import org.opensearch.action.index.IndexRequestBuilder;
 import org.opensearch.action.search.SearchRequestBuilder;
 import org.opensearch.action.search.SearchResponse;
@@ -127,6 +129,8 @@
 import static org.hamcrest.Matchers.not;
 import static org.hamcrest.Matchers.startsWith;
 
+// Higher timeout to accommodate large number of tests in this class. See https://github.com/opensearch-project/OpenSearch/issues/12119
+@TimeoutSuite(millis = 35 * TimeUnits.MINUTE)
 public class HighlighterSearchIT extends ParameterizedStaticSettingsOpenSearchIntegTestCase {
 
     // TODO as we move analyzers out of the core we need to move some of these into HighlighterWithAnalyzersTests