diff --git a/lectures/09-lowlevel/lecture.slide b/lectures/09-lowlevel/lecture.slide
index 73fffd5..7fb54c9 100644
--- a/lectures/09-lowlevel/lecture.slide
+++ b/lectures/09-lowlevel/lecture.slide
@@ -82,3 +82,8 @@ low-level
 * cgo
 
 .code bzip/bzip2.go /func .* Write/,/^}/
+
+* syscall
+
+- syscall заморожен
+- x/sys/unix содержит актуальные реализации системных вызовов