diff --git a/go.mod b/go.mod
index eac9769..a91a8d5 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/ncruces/go-dns
 
 go 1.19
 
-require golang.org/x/net v0.23.0
+require golang.org/x/net v0.33.0
diff --git a/go.sum b/go.sum
index 199e74a..16660ab 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,2 @@
-golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
-golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
+golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
+golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=