diff --git a/demo/java-demo/build.gradle b/demo/java-demo/build.gradle
index 807bbd7..799a453 100644
--- a/demo/java-demo/build.gradle
+++ b/demo/java-demo/build.gradle
@@ -13,8 +13,8 @@ repositories {
 
 dependencies {
     testImplementation('org.junit.jupiter:junit-jupiter:5.6.2')
-    testImplementation('com.alibaba.testable:testable-all:0.4.8')
-    testAnnotationProcessor('com.alibaba.testable:testable-processor:0.4.8')
+    testImplementation('com.alibaba.testable:testable-all:0.4.9')
+    testAnnotationProcessor('com.alibaba.testable:testable-processor:0.4.9')
 }
 
 tasks.withType(JavaCompile) {
diff --git a/demo/java-demo/pom.xml b/demo/java-demo/pom.xml
index fa13036..58da8fb 100644
--- a/demo/java-demo/pom.xml
+++ b/demo/java-demo/pom.xml
@@ -12,7 +12,7 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <junit.version>5.6.2</junit.version>
-        <testable.version>0.4.8</testable.version>
+        <testable.version>0.4.9</testable.version>
     </properties>
 
     <dependencies>
diff --git a/demo/kotlin-demo/build.gradle.kts b/demo/kotlin-demo/build.gradle.kts
index adf514c..9298b68 100644
--- a/demo/kotlin-demo/build.gradle.kts
+++ b/demo/kotlin-demo/build.gradle.kts
@@ -16,8 +16,8 @@ dependencies {
 	implementation("org.jetbrains.kotlin:kotlin-reflect")
 	implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
 	testImplementation("org.junit.jupiter:junit-jupiter:5.6.2")
-	testImplementation("com.alibaba.testable:testable-all:0.4.8")
-	testAnnotationProcessor("com.alibaba.testable:testable-processor:0.4.8")
+	testImplementation("com.alibaba.testable:testable-all:0.4.9")
+	testAnnotationProcessor("com.alibaba.testable:testable-processor:0.4.9")
 }
 
 tasks.withType<KotlinCompile> {
diff --git a/demo/kotlin-demo/pom.xml b/demo/kotlin-demo/pom.xml
index b44a400..a0f9b40 100644
--- a/demo/kotlin-demo/pom.xml
+++ b/demo/kotlin-demo/pom.xml
@@ -14,7 +14,7 @@
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>
 		<junit.version>5.6.2</junit.version>
-		<testable.version>0.4.8</testable.version>
+		<testable.version>0.4.9</testable.version>
 	</properties>
 
 	<dependencies>
diff --git a/docs/en-us/doc/release-note.md b/docs/en-us/doc/release-note.md
index 9e62ac5..dbbea65 100644
--- a/docs/en-us/doc/release-note.md
+++ b/docs/en-us/doc/release-note.md
@@ -1,13 +1,17 @@
 # Release Note
 
+## 0.4.9
+- fix an issue cause by improperly bytecode processing while using `targetClass` parameter
+- auto validate access target of `PrivateAccessor`, improve resistance to code refactoring
+
 ## 0.4.8
-- Fix an issue of private method invocation failed in assignment statements
-- Support using mock for testing with `SpringRunner`
-- Support `targetClass` parameter in `@MockMethod` annotation
+- fix an issue of private method invocation failed in assignment statements
+- support using mock for testing with `SpringRunner`
+- support `targetClass` parameter in `@MockMethod` annotation
 
 ## 0.4.7
-- Fix incorrect stack size caused by `MOCK_CONTEXT` variable initialization
-- Fix incorrect gradle build path of under Windows operating system
+- fix incorrect stack size caused by `MOCK_CONTEXT` variable initialization
+- fix incorrect gradle build path of under Windows operating system
 
 ## 0.4.6
 - fix an issue of `IINC` bytecode processing
diff --git a/docs/en-us/doc/setup.md b/docs/en-us/doc/setup.md
index 8b2aedc..e4bfcc6 100644
--- a/docs/en-us/doc/setup.md
+++ b/docs/en-us/doc/setup.md
@@ -15,7 +15,7 @@ It is recommended to add a `property` field that identifies the TestableMock ver
 
 ```xml
 <properties>
-    <testable.version>0.4.8</testable.version>
+    <testable.version>0.4.9</testable.version>
 </properties>
 ```
 
@@ -62,8 +62,8 @@ Add dependence of `TestableMock` in `build.gradle` file:
 
 ```groovy
 dependencies {
-    testImplementation('com.alibaba.testable:testable-all:0.4.8')
-    testAnnotationProcessor('com.alibaba.testable:testable-processor:0.4.8')
+    testImplementation('com.alibaba.testable:testable-all:0.4.9')
+    testAnnotationProcessor('com.alibaba.testable:testable-processor:0.4.9')
 }
 ```
 
diff --git a/docs/zh-cn/doc/release-note.md b/docs/zh-cn/doc/release-note.md
index e3b214d..01295ab 100644
--- a/docs/zh-cn/doc/release-note.md
+++ b/docs/zh-cn/doc/release-note.md
@@ -1,5 +1,9 @@
 # Release Note
 
+## 0.4.9
+- 修复发起调用的对象不是局部或成员变量时Mock出错的BUG (issue-40)
+- 增加`PrivateAccessor`访问目标有效性检查，提高抗代码重构能力 (issue-21)
+
 ## 0.4.8
 - 修复赋值语句中的私有方法调用无法访问的BUG (issue-33)
 - 支持在包含`SpringRunner`的测试中使用Mock (issue-30)
diff --git a/docs/zh-cn/doc/setup.md b/docs/zh-cn/doc/setup.md
index 05ecebd..1c8e7f8 100644
--- a/docs/zh-cn/doc/setup.md
+++ b/docs/zh-cn/doc/setup.md
@@ -15,7 +15,7 @@
 
 ```xml
 <properties>
-    <testable.version>0.4.8</testable.version>
+    <testable.version>0.4.9</testable.version>
 </properties>
 ```
 
@@ -62,8 +62,8 @@
 
 ```groovy
 dependencies {
-    testImplementation('com.alibaba.testable:testable-all:0.4.8')
-    testAnnotationProcessor('com.alibaba.testable:testable-processor:0.4.8')
+    testImplementation('com.alibaba.testable:testable-all:0.4.9')
+    testAnnotationProcessor('com.alibaba.testable:testable-processor:0.4.9')
 }
 ```
 
diff --git a/testable-agent/pom.xml b/testable-agent/pom.xml
index 31f3e45..012b151 100755
--- a/testable-agent/pom.xml
+++ b/testable-agent/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.alibaba.testable</groupId>
         <artifactId>testable-parent</artifactId>
-        <version>0.4.8</version>
+        <version>0.4.9</version>
         <relativePath>../testable-parent</relativePath>
     </parent>
     <artifactId>testable-agent</artifactId>
diff --git a/testable-all/pom.xml b/testable-all/pom.xml
index 889e044..f15fd70 100644
--- a/testable-all/pom.xml
+++ b/testable-all/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.alibaba.testable</groupId>
         <artifactId>testable-parent</artifactId>
-        <version>0.4.8</version>
+        <version>0.4.9</version>
         <relativePath>../testable-parent</relativePath>
     </parent>
     <artifactId>testable-all</artifactId>
diff --git a/testable-core/pom.xml b/testable-core/pom.xml
index 1a34513..b7fa70d 100644
--- a/testable-core/pom.xml
+++ b/testable-core/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.alibaba.testable</groupId>
         <artifactId>testable-parent</artifactId>
-        <version>0.4.8</version>
+        <version>0.4.9</version>
         <relativePath>../testable-parent</relativePath>
     </parent>
     <artifactId>testable-core</artifactId>
diff --git a/testable-maven-plugin/pom.xml b/testable-maven-plugin/pom.xml
index 0e08156..d35c374 100644
--- a/testable-maven-plugin/pom.xml
+++ b/testable-maven-plugin/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.alibaba.testable</groupId>
         <artifactId>testable-parent</artifactId>
-        <version>0.4.8</version>
+        <version>0.4.9</version>
         <relativePath>../testable-parent</relativePath>
     </parent>
     <artifactId>testable-maven-plugin</artifactId>
diff --git a/testable-parent/pom.xml b/testable-parent/pom.xml
index 36456bc..1a70108 100644
--- a/testable-parent/pom.xml
+++ b/testable-parent/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.alibaba.testable</groupId>
     <artifactId>testable-parent</artifactId>
-    <version>0.4.8</version>
+    <version>0.4.9</version>
     <packaging>pom</packaging>
     <name>testable-parent</name>
     <description>Unit test enhancement toolkit</description>
@@ -42,7 +42,7 @@
         <plugin.gpg.version>1.6</plugin.gpg.version>
         <plugin.staging.version>1.6.8</plugin.staging.version>
         <plugin.maven.version>3.6.0</plugin.maven.version>
-        <testable.version>0.4.8</testable.version>
+        <testable.version>0.4.9</testable.version>
     </properties>
 
     <profiles>
diff --git a/testable-processor/pom.xml b/testable-processor/pom.xml
index 10e62fd..e494e66 100644
--- a/testable-processor/pom.xml
+++ b/testable-processor/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.alibaba.testable</groupId>
         <artifactId>testable-parent</artifactId>
-        <version>0.4.8</version>
+        <version>0.4.9</version>
         <relativePath>../testable-parent</relativePath>
     </parent>
     <artifactId>testable-processor</artifactId>