diff --git a/syllabus.qmd b/syllabus.qmd
index 83726d4..9c5c4bf 100644
--- a/syllabus.qmd
+++ b/syllabus.qmd
@@ -184,7 +184,9 @@ These rules also apply to getting help from other people such as friends not in
 the course (try the problem first, discuss strategies, not step-by-step
 solutions, acknowledge those from whom you received help).
 
-You may not use homework help websites, ChatGPT, Stack Overflow, and so on under any circumstances. The purpose here is to learn. Good faith efforts toward learning are rewarded.
+You may not use homework help websites under any circumstances.
+You are also very strongly discouraged from using ChatGPT, Stack Overflow, and so on.
+The purpose here is to learn. Good faith efforts toward learning are rewarded.
 
 You can always, of course, ask me for help on Slack. And public Slack
 **questions** are allowed and encouraged.
@@ -203,8 +205,9 @@ But external sources must be used to **support** your solution, not to
 * Find course materials or solutions from this or similar courses from previous years, or
 * Copy text or code to use in your submissions without attribution.
 
-If you use code from online or other sources, you must include code comments
-identifying the source. It must be clear what code you wrote and what code is
+If you use code from online or other sources (including generative AI),
+you must include code comments identifying the source.
+It must be clear what code you wrote and what code is
 from other sources. This rule also applies to text, images, and any other
 material you submit.
 
@@ -267,6 +270,19 @@ Illustrative scenarios:
 
 Choose your own adventure. Note that the biggest barrier to getting to 65 is skipping the assignments.
 
+
+#### Late policy
+
+Late lab/homework submissions will not be accepted.
+
+More specifically, any submission that we receive after grading has commenced will receive a 0.
+We likely won't start grading at 11:01pm on the due date, so don't worry if you're a few minutes late.
+On the other hand, don't even bother submitting if you've missed the deadline by a few days.
+
+This policy may seem harsh, but remember that there are many paths to a full 65 on the effort based grade.
+If you miss one assignment, focus on doing well on the other labs/assignments
+and you might still end up with an A in the course.
+
 ---
 
 ### Final exam