diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index d3c86db..8717b13 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -22,6 +22,11 @@ Here are the various things that should be checked when updating Kawari to a new
 
 Since the Zone IPC opcodes change every patch, it's extremely easy to change the opcodes in Kawari. Edit the values under `resources/opcodes.json` and recompile Kawari. You still have to change the structs themselves (located under `src/<connection>/ipc`) if needed though.
 
+Opcodes can be updated from (from least to most pain): 
+* The [opcodediff](https://github.com/xivdev/opcodediff) and the [opcode-update tool from XIVPacketTools](https://github.com/redstrate/XIVPacketTools) once they update.
+* The [FFXIVOpcodes repository](https://github.com/karashiiro/FFXIVOpcodes/blob/master/opcodes.json) once they update.
+* Manual testing using tools like Chronofoil.
+
 ## Contributing
 
 Before making a pull request, make sure: