diff --git a/go.mod b/go.mod
index 523cb32..0257583 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/emmansun/sm9
 
 go 1.24.0
 
-require golang.org/x/sys v0.36.0
+require golang.org/x/sys v0.39.0
diff --git a/go.sum b/go.sum
index 44f2d40..42ca247 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,2 @@
-golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
-golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.39.0 h1:CvCKL8MeisomCi6qNZ+wbb0DN9E5AATixKsvNtMoMFk=
+golang.org/x/sys v0.39.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=