diff --git a/go.mod b/go.mod
index fa75795..3a4cf2d 100644
--- a/go.mod
+++ b/go.mod
@@ -5,5 +5,5 @@ go 1.25.0
 require (
 	github.com/cloudmailin/cloudmailin-go v0.3.2
 	github.com/gomarkdown/markdown v0.0.0-20260614204949-e08cff860f76
-	golang.org/x/net v0.57.0
+	golang.org/x/net v0.58.0
 )
diff --git a/go.sum b/go.sum
index 3055165..e7b37de 100644
--- a/go.sum
+++ b/go.sum
@@ -4,6 +4,6 @@ github.com/gomarkdown/markdown v0.0.0-20260614204949-e08cff860f76 h1:Ltt9ldIaSYE
 github.com/gomarkdown/markdown v0.0.0-20260614204949-e08cff860f76/go.mod h1:JDGcbDT52eL4fju3sZ4TeHGsQwhG9nbDV21aMyhwPoA=
 github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
 github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-golang.org/x/net v0.57.0 h1:K5+3DljvIuDG9/Jv9rvyMywYNFCQ9RSUY6OOTTkT+tE=
-golang.org/x/net v0.57.0/go.mod h1:KpXc8iv+r3XplLAG/f7Jsf9RPszJzdR0f58q9vGOuEU=
+golang.org/x/net v0.58.0 h1:ynWG7rqYi4ccpTEuPZ2QGWHktVEM9DMCj9yzDE0Q7To=
+golang.org/x/net v0.58.0/go.mod h1:YwCddHnFlT7eLQqVprV19OnhLGtc5xOKgE0RyqgfWAU=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=