diff --git a/runelite-api/src/main/java/net/runelite/api/Opcodes.java b/runelite-api/src/main/java/net/runelite/api/Opcodes.java
index 1ee96df082..b5fe92196a 100644
--- a/runelite-api/src/main/java/net/runelite/api/Opcodes.java
+++ b/runelite-api/src/main/java/net/runelite/api/Opcodes.java
@@ -29,6 +29,16 @@ package net.runelite.api;
  */
 public class Opcodes
 {
+	/**
+	 * opcode used to return from scripts.
+	 */
+	public static final int RETURN = 21;
+
+	/**
+	 * opcode used to invoke scripts.
+	 */
+	public static final int INVOKE = 40;
+
 	/**
 	 * RuneLite execution opcode used to inject scripts.
 	 */