diff --git a/CHANGELOG.md b/CHANGELOG.md
index a920d8b..56f2ddd 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,9 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased 
+## 2.1.0 - 2021-01-23
 ### Added
 * Tests for JSON patch move operation on nonexistent value.
+* Test case for failure of character encoding detection.
 
 ### Changed
 * Add operation on empty JSON pointer to structure type now accepts both array and object. This change is due to the requirement in the TCK. 
diff --git a/README.md b/README.md
index 995f1f8..3dbb3bf 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ The jar-packaged artifact of this test suite is available from [JitPack] reposit
     <dependency>
         <groupId>org.leadpony</groupId>
         <artifactId>jsonp-test-suite</artifactId>
-        <version>2.0.0</version>
+        <version>2.1.0</version>
         <scope>test</scope>
     </dependency>
 </dependencies>
@@ -84,7 +84,7 @@ mvn test -P test-with-joy
 ```
 
 ## Copyright Notice
-Copyright 2019-2020 the original author or authors. All rights reserved.
+Copyright 2019-2021 the original author or authors. All rights reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this product except in compliance with the License.
diff --git a/pom.xml b/pom.xml
index f0c5a60..d92ff26 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>org.leadpony</groupId>
     <artifactId>jsonp-test-suite</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.1.0</version>
     <packaging>jar</packaging>
 
     <name>JSON-P Test Suite</name>
@@ -244,7 +244,7 @@
                 <dependency>
                     <groupId>org.leadpony.joy</groupId>
                     <artifactId>joy-classic</artifactId>
-                    <version>2.0.0</version>
+                    <version>2.1.0</version>
                     <scope>test</scope>
                 </dependency>
             </dependencies>
diff --git a/src/main/java/org/leadpony/jsonp/testsuite/tests/CharsetDetectionTest.java b/src/main/java/org/leadpony/jsonp/testsuite/tests/CharsetDetectionTest.java
index afc7113..a8e3ae8 100644
--- a/src/main/java/org/leadpony/jsonp/testsuite/tests/CharsetDetectionTest.java
+++ b/src/main/java/org/leadpony/jsonp/testsuite/tests/CharsetDetectionTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2020 the JSON-P Test Suite Authors.
+ * Copyright 2019-2021 the JSON-P Test Suite Authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,9 @@
  */
 package org.leadpony.jsonp.testsuite.tests;
 
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatCode;
+import static org.assertj.core.api.Assertions.catchThrowable;
 
 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
@@ -24,10 +26,12 @@
 import java.nio.charset.StandardCharsets;
 
 import jakarta.json.Json;
+import jakarta.json.JsonException;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.stream.JsonParserFactory;
 
 import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.EnumSource;
 
@@ -112,19 +116,27 @@ public void utf32leWithBom(JsonTestCase test) {
         testParser(test, UTF_32LE, UTF_32LE_BOM);
     }
 
+    @Test
+    public void shouldFailToDetectEncoding() {
+        byte[] bytes = {0x00};
+        InputStream in = new ByteArrayInputStream(bytes);
+        Throwable thrown = catchThrowable(() -> {
+            parserFactory.createParser(in);
+        });
+        assertThat(thrown).isInstanceOf(JsonException.class);
+    }
+
     private void testParser(JsonTestCase test, Charset charset) {
         InputStream in = createEncodedStream(test.getJson(), charset);
-        assertThatCode(() -> {
-            JsonParser parser = parserFactory.createParser(in);
-            while (parser.hasNext()) {
-                parser.next();
-            }
-            parser.close();
-        }).doesNotThrowAnyException();
+        testParserWithStream(in);
     }
 
     private void testParser(JsonTestCase test, Charset charset, byte[] bom) {
         InputStream in = createEncodedStream(test.getJson(), charset, bom);
+        testParserWithStream(in);
+    }
+
+    private void testParserWithStream(InputStream in) {
         assertThatCode(() -> {
             JsonParser parser = parserFactory.createParser(in);
             while (parser.hasNext()) {