diff --git a/build.gradle b/build.gradle
index 1cd8f22..e941ce1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -28,7 +28,7 @@ configurations {
 dependencies {
     annotation project(':annotation')
     implementation project(':annotation')
-    implementation 'org.ow2.asm:asm:9.6'
+    implementation 'org.ow2.asm:asm:9.9.1'
     implementation 'org.apache.ant:ant:1.10.14'
     testImplementation 'junit:junit:4.13.2'
 }
@@ -50,7 +50,7 @@ task generateSources(type: Copy) {
 // Use generated sources
 compileJava.dependsOn generateSources
 
-def LIBRARIES = ["asm-9.6.jar"]
+def LIBRARIES = ["asm-9.9.1.jar"]
 def LIBRARY_JARS = configurations.dependents.filter {
   file -> file.name in LIBRARIES
 }
diff --git a/src/main/java/com/yworks/yguard/obf/classfile/ClassConstants.java b/src/main/java/com/yworks/yguard/obf/classfile/ClassConstants.java
index 86473eb..df3b418 100644
--- a/src/main/java/com/yworks/yguard/obf/classfile/ClassConstants.java
+++ b/src/main/java/com/yworks/yguard/obf/classfile/ClassConstants.java
@@ -27,7 +27,7 @@ public interface  ClassConstants
   /**
    * The constant MAJOR_VERSION.
    */
-  public static final int MAJOR_VERSION     = 0x41;
+  public static final int MAJOR_VERSION     = 0x45;
 
   /**
    * The constant ACC_PUBLIC.