diff --git a/server/src/internalClusterTest/java/org/opensearch/indices/replication/SegmentReplicationIT.java b/server/src/internalClusterTest/java/org/opensearch/indices/replication/SegmentReplicationIT.java
index 2af24af513b9e..bdd8320a412d1 100644
--- a/server/src/internalClusterTest/java/org/opensearch/indices/replication/SegmentReplicationIT.java
+++ b/server/src/internalClusterTest/java/org/opensearch/indices/replication/SegmentReplicationIT.java
@@ -74,6 +74,8 @@
 
 import java.io.IOException;
 import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -1350,16 +1352,17 @@ public void testWithOlderCodecs() throws Exception {
 
     // Return oldest lucene codec name. It does this by iterating throw all directories under lucene library and filter
     // ones matching lucene codec name regex
-    private String getOlderLuceneCodec() throws IOException {
+    private String getOlderLuceneCodec() throws IOException, URISyntaxException {
         final TreeSet<String> codecNames = new TreeSet<>();
-        ZipInputStream zip = new ZipInputStream(Codec.class.getProtectionDomain().getCodeSource().getLocation().openStream());
+        final String separator = PathUtils.getDefaultFileSystem().getSeparator();
         Pattern pattern = Pattern.compile("lucene[0-9]+");
-        for (ZipEntry entry = zip.getNextEntry(); entry != null; entry = zip.getNextEntry()) {
-            if (entry.isDirectory()) {
-                // Remove trailing file separator from path i.e. '../lucene94/' -> '../lucene94'
-                final String dirPath = entry.getName().substring(0, entry.getName().length() - 1);
-                // Fetch name i.e. '../lucene94' -> 'lucene94'
-                final String dirName = dirPath.substring(dirPath.lastIndexOf(PathUtils.getDefaultFileSystem().getSeparator()) + 1);
+        Path luceneJarPath = PathUtils.get(Codec.class.getProtectionDomain().getCodeSource().getLocation().toURI());
+        try (var fileIn = Files.newInputStream(luceneJarPath)) {
+            ZipInputStream zip = new ZipInputStream(fileIn);
+            for (ZipEntry entry = zip.getNextEntry(); entry != null; entry = zip.getNextEntry()) {
+                final String dirPath = entry.getName();
+                // Fetch name i.e. '../lucene94/' -> 'lucene94'
+                final String dirName = dirPath.substring(dirPath.lastIndexOf(separator, dirPath.length() - 2) + 1, dirPath.length() - 1);
                 Matcher matcher = pattern.matcher(dirName);
                 if (matcher.matches()) {
                     codecNames.add(dirName);