diff --git a/src/main/java/de/thetaphi/forbiddenapis/AsmUtils.java b/src/main/java/de/thetaphi/forbiddenapis/AsmUtils.java
index 3a31245..eade92f 100644
--- a/src/main/java/de/thetaphi/forbiddenapis/AsmUtils.java
+++ b/src/main/java/de/thetaphi/forbiddenapis/AsmUtils.java
@@ -180,7 +180,7 @@ private static byte[] readStream(final InputStream in) throws IOException {
   @SuppressWarnings("unused")
   public static ClassReader readAndPatchClass(InputStream in) throws IOException {
     final byte[] bytecode = readStream(in);
-    if (false) patchClassMajorVersion(bytecode, Opcodes.V22 + 1, Opcodes.V22);
+    if (false) patchClassMajorVersion(bytecode, Opcodes.V23 + 1, Opcodes.V23);
     return new ClassReader(bytecode);
   }