diff --git a/vendor.mod b/vendor.mod
index f243de66868a..445cff4349b0 100644
--- a/vendor.mod
+++ b/vendor.mod
@@ -104,7 +104,7 @@ require (
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.44.0 // indirect
 	go.opentelemetry.io/proto/otlp v1.10.0 // indirect
 	golang.org/x/mod v0.37.0 // indirect
-	golang.org/x/net v0.55.0 // indirect
+	golang.org/x/net v0.56.0 // indirect
 	golang.org/x/time v0.15.0 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20260526163538-3dc84a4a5aaa // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260526163538-3dc84a4a5aaa // indirect
diff --git a/vendor.sum b/vendor.sum
index 7a968996f85d..2391466fff1e 100644
--- a/vendor.sum
+++ b/vendor.sum
@@ -246,8 +246,8 @@ golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/net v0.55.0 h1:bcvxaJn3e1U6InsFWt1JUq1aSjnRxLzT2rtD2KfkDF8=
-golang.org/x/net v0.55.0/go.mod h1:L5U2KuzuOe1lY7Z+aWVIKK6qEeJXnXV9yzGA+WCHJww=
+golang.org/x/net v0.56.0 h1:Rw8j/hFzGvJUZwNBXnAtf5sVDVt+65SK2C7IxCxZt5o=
+golang.org/x/net v0.56.0/go.mod h1:D3Ku6r+V6JROoZK144D2XfMHFcMq/0zSfLelVTCFKec=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
diff --git a/vendor/golang.org/x/net/http2/server_wrap.go b/vendor/golang.org/x/net/http2/server_wrap.go
index a7a09551c432..737f1f0573b9 100644
--- a/vendor/golang.org/x/net/http2/server_wrap.go
+++ b/vendor/golang.org/x/net/http2/server_wrap.go
@@ -10,9 +10,11 @@ package http2
 
 import (
 	"context"
+	"crypto/tls"
 	"errors"
 	"net"
 	"net/http"
+	"slices"
 	"sync"
 	"time"
 )
@@ -44,6 +46,20 @@ func configureServer(s *http.Server, conf *Server) error {
 			h2.IdleTimeout = h1.ReadTimeout
 		}
 	}
+
+	// Register h2 and http/1.1 ALPN protocols on s.TLSConfig, matching
+	// the pre-wrapping implementation in server.go, so that TLS listeners
+	// built from s.TLSConfig still negotiate HTTP/2.
+	if s.TLSConfig == nil {
+		s.TLSConfig = new(tls.Config)
+	}
+	if !slices.Contains(s.TLSConfig.NextProtos, NextProtoTLS) {
+		s.TLSConfig.NextProtos = append(s.TLSConfig.NextProtos, NextProtoTLS)
+	}
+	if !slices.Contains(s.TLSConfig.NextProtos, "http/1.1") {
+		s.TLSConfig.NextProtos = append(s.TLSConfig.NextProtos, "http/1.1")
+	}
+
 	conf.state = &serverInternalState{
 		s1: s,
 	}
diff --git a/vendor/golang.org/x/net/http2/transport_wrap.go b/vendor/golang.org/x/net/http2/transport_wrap.go
index d25d99bdbb0b..eab2e6b07312 100644
--- a/vendor/golang.org/x/net/http2/transport_wrap.go
+++ b/vendor/golang.org/x/net/http2/transport_wrap.go
@@ -22,8 +22,8 @@ import (
 )
 
 func configureTransport(t1 *http.Transport) error {
-	// ConfigureTransport is a no-op: The http.Transport already supports HTTP/2.
-	return nil
+	_, err := configureTransports(t1)
+	return err
 }
 
 func configureTransports(t1 *http.Transport) (*Transport, error) {
@@ -31,6 +31,17 @@ func configureTransports(t1 *http.Transport) (*Transport, error) {
 	// linked to the http.Transport's.
 	tr2 := &Transport{}
 	tr2.configure(t1)
+	// Enable HTTP/2 on the transport, as the pre-wrapping implementation did:
+	// net/http does not auto-enable it for a transport with a custom
+	// TLSClientConfig or dialer.
+	if t1.TLSClientConfig == nil {
+		t1.TLSClientConfig = &tls.Config{}
+	}
+	if t1.Protocols == nil {
+		t1.Protocols = new(http.Protocols)
+		t1.Protocols.SetHTTP1(true)
+	}
+	t1.Protocols.SetHTTP2(true)
 	return tr2, nil
 }
 
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 12a4177ceb3a..0f45c8520f9f 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -398,7 +398,7 @@ golang.org/x/mod/internal/lazyregexp
 golang.org/x/mod/modfile
 golang.org/x/mod/module
 golang.org/x/mod/semver
-# golang.org/x/net v0.55.0
+# golang.org/x/net v0.56.0
 ## explicit; go 1.25.0
 golang.org/x/net/http/httpguts
 golang.org/x/net/http2