diff --git a/src/uxn_tutorial.gmo b/src/uxn_tutorial.gmo
index 247fc40..ad31ac9 100644
--- a/src/uxn_tutorial.gmo
+++ b/src/uxn_tutorial.gmo
@@ -82,6 +82,7 @@ this is a summary of the uxn instructions covered in each day of the tutorial.
 * POP: Remove top element from the stack ( a -- )
 * DUP: Duplicate; push a copy of the top element ( a -- a a )
 * SWP: Swap; change the order of the top two elements of the stack ( a b -- b a )
+* NIP: Remove the top second element of the stack ( a b -- b )
 * OVR: Over; push a copy of the second top element ( a b -- a b a )
 * ROT: Rotate; reorder the top three elements of the stack so that the third one is now at the top ( a b c -- b c a )