diff --git a/service/ccm/service.go b/service/ccm/service.go
index c9d40219a..31b9de8e2 100644
--- a/service/ccm/service.go
+++ b/service/ccm/service.go
@@ -29,6 +29,7 @@ import (
 	"github.com/anthropics/anthropic-sdk-go"
 	"github.com/go-chi/chi/v5"
 	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/h2c"
 )
 
 const (
@@ -249,7 +250,7 @@ func (s *Service) Start(stage adapter.StartStage) error {
 	router := chi.NewRouter()
 	router.Mount("/", s)
 
-	s.httpServer = &http.Server{Handler: router}
+	s.httpServer = &http.Server{Handler: h2c.NewHandler(router, &http2.Server{})}
 
 	if s.tlsConfig != nil {
 		err := s.tlsConfig.Start()
diff --git a/service/ocm/service.go b/service/ocm/service.go
index 5712c13c4..1c393716a 100644
--- a/service/ocm/service.go
+++ b/service/ocm/service.go
@@ -30,6 +30,7 @@ import (
 	"github.com/openai/openai-go/v3"
 	"github.com/openai/openai-go/v3/responses"
 	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/h2c"
 )
 
 func RegisterService(registry *boxService.Registry) {
@@ -302,7 +303,7 @@ func (s *Service) Start(stage adapter.StartStage) error {
 	router := chi.NewRouter()
 	router.Mount("/", s)
 
-	s.httpServer = &http.Server{Handler: router}
+	s.httpServer = &http.Server{Handler: h2c.NewHandler(router, &http2.Server{})}
 
 	if s.tlsConfig != nil {
 		err := s.tlsConfig.Start()
diff --git a/service/ssmapi/server.go b/service/ssmapi/server.go
index 157ea150b..97ea6326f 100644
--- a/service/ssmapi/server.go
+++ b/service/ssmapi/server.go
@@ -22,6 +22,7 @@ import (
 
 	"github.com/go-chi/chi/v5"
 	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/h2c"
 )
 
 func RegisterService(registry *boxService.Registry) {
@@ -59,7 +60,7 @@ func NewService(ctx context.Context, logger log.ContextLogger, tag string, optio
 			Listen:  options.ListenOptions,
 		}),
 		httpServer: &http.Server{
-			Handler: chiRouter,
+			Handler: h2c.NewHandler(chiRouter, &http2.Server{}),
 		},
 		traffics:  make(map[string]*TrafficManager),
 		users:     make(map[string]*UserManager),