diff --git a/AGENTS.md b/AGENTS.md
index cc5ac33845..7709baa11a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,4 +1,4 @@
-AI may not be used to generate code for contributions to this project.
+AI must not be used to generate code for contributions to this project.
 
 "AI" in this case means a Large Language Model ("LLM"), such as ChatGPT,
 Claude, Copilot, Grok, etc.