diff --git a/pom.xml b/pom.xml
index 99a25f2d91..775f4f3a58 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   </developers>
 
   <properties>
-    <lucene.version>9.3.0</lucene.version>
+    <lucene.version>9.4.2</lucene.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
diff --git a/src/main/java/io/anserini/index/IndexDenseVectors.java b/src/main/java/io/anserini/index/IndexDenseVectors.java
index 00507bf380..39d6e6242c 100644
--- a/src/main/java/io/anserini/index/IndexDenseVectors.java
+++ b/src/main/java/io/anserini/index/IndexDenseVectors.java
@@ -30,8 +30,8 @@
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.core.config.Configurator;
 import org.apache.lucene.codecs.KnnVectorsFormat;
-import org.apache.lucene.codecs.lucene92.Lucene92Codec;
-import org.apache.lucene.codecs.lucene92.Lucene92HnswVectorsFormat;
+import org.apache.lucene.codecs.lucene94.Lucene94Codec;
+import org.apache.lucene.codecs.lucene94.Lucene94HnswVectorsFormat;
 import org.apache.lucene.document.Document;
 import org.apache.lucene.index.ConcurrentMergeScheduler;
 import org.apache.lucene.index.IndexWriter;
@@ -384,10 +384,10 @@ public Counters run() throws IOException {
     // Used for LocalIndexThread
     if (indexPath != null) {
       final Directory dir = FSDirectory.open(indexPath);
-      final IndexWriterConfig config = new IndexWriterConfig().setCodec(new Lucene92Codec(){
+      final IndexWriterConfig config = new IndexWriterConfig().setCodec(new Lucene94Codec(){
         @Override
         public KnnVectorsFormat getKnnVectorsFormatForField(String field) {
-          return new Lucene92HnswVectorsFormat(args.M, args.efC);
+          return new Lucene94HnswVectorsFormat(args.M, args.efC);
         }
       });
       config.setOpenMode(IndexWriterConfig.OpenMode.CREATE);