diff --git a/compiler/sema.c b/compiler/sema.c
index 2dac8a3..110ad2f 100644
--- a/compiler/sema.c
+++ b/compiler/sema.c
@@ -917,6 +917,28 @@ sema_make_builtin_types(SemaCtx *sctx)
 				)
 			}
 		},
+		{
+			"<",
+			{
+				.kind = SymProc,
+				.dtype = make_proc_type(
+					true,
+					bool_dt,
+					make_proc_args((DataType *[]){u64_dt, u64_dt}, 2)
+				)
+			}
+		},
+		{
+			">",
+			{
+				.kind = SymProc,
+				.dtype = make_proc_type(
+					true,
+					bool_dt,
+					make_proc_args((DataType *[]){u64_dt, u64_dt}, 2)
+				)
+			}
+		},
 	};
 
 	for (isize i = 0; i < countof(builtin_basic_types); ++i) {