diff --git a/README.md b/README.md
index e55baea..0a09adb 100644
--- a/README.md
+++ b/README.md
@@ -26,14 +26,17 @@ java -jar ./target/bioformats-imageinfo-1.1.0-jar-with-dependencies.jar "[path t
 import java.util.LinkedHashMap;
 import java.util.Map;
 import jp.riken.neurodata.tools.BioFormatsImageInfo;
-import jp.riken.neurodata.tools.BioFormatsException;
+import jp.riken.neurodata.tools.BioFormatsImageException;
+import jp.riken.neurodata.tools.BioFormatsImageThumbnail;
 
 String path = "[path to image file]";
 String format = "";
 Map<String, Object> metadata = new LinkedHashMap<String, Object>();
+Map<String, Object> thumbnail = new LinkedHashMap<String, Object>();
 
 try {
   format = BioFormatsImageInfo.readMetadata(path, metadata);
+  BioFormatsImageThumbnail.readThumbnail(path, thumbnail);
 } catch (BioFormatsImageException e) {
   // error occurred
   e.printStackTrace();