diff --git a/core-server/src/main/java/jersey/repackaged/org/objectweb/asm/ClassReader.java b/core-server/src/main/java/jersey/repackaged/org/objectweb/asm/ClassReader.java
index 0366274..6246bcf 100644
--- a/core-server/src/main/java/jersey/repackaged/org/objectweb/asm/ClassReader.java
+++ b/core-server/src/main/java/jersey/repackaged/org/objectweb/asm/ClassReader.java
@@ -167,7 +167,7 @@
         this.b = b;
         // checks the class version
         // added "support" for java 11 compiled classes
-        if (readShort(off + 6) > Opcodes.V11) {
+        if (readShort(off + 6) > Opcodes.V12) {
             throw new IllegalArgumentException();
         }
         // parses the constant pool
diff --git a/core-server/src/main/java/jersey/repackaged/org/objectweb/asm/Opcodes.java b/core-server/src/main/java/jersey/repackaged/org/objectweb/asm/Opcodes.java
index 42e403f..3532da6 100644
--- a/core-server/src/main/java/jersey/repackaged/org/objectweb/asm/Opcodes.java
+++ b/core-server/src/main/java/jersey/repackaged/org/objectweb/asm/Opcodes.java
@@ -58,10 +58,11 @@
     int V1_6 = 0 << 16 | 50;
     int V1_7 = 0 << 16 | 51;
     int V1_8 = 0 << 16 | 52;
-    // added "support" for java 9, 10, 11 compiled classes
+    // added "support" for java 9, 10, 11, 12 compiled classes
     int V9 = 0 << 16 | 53;
     int V10 = 0 << 16 | 54;
     int V11 = 0 << 16 | 55;
+    int V12 = 0 << 16 | 56;
 
     // access flags