diff --git a/.ocamlformat-ignore b/.ocamlformat-ignore
index 1e7f6979..b227622a 100644
--- a/.ocamlformat-ignore
+++ b/.ocamlformat-ignore
@@ -17,6 +17,7 @@ astlib/ast_412.ml
 astlib/ast_413.ml
 astlib/ast_414.ml
 astlib/ast_501.ml
+astlib/ast_502.ml
 
 # Files that use cinaps to generate code blocks from other code blocks work well,
 # but files that inject freely formatted code via cinaps must be excluded