diff --git a/router/middleware.go b/router/middleware.go
index 4d857b56..56b0e88d 100644
--- a/router/middleware.go
+++ b/router/middleware.go
@@ -74,6 +74,16 @@ func AccessLoggingMiddleware(logger *zap.Logger) echo.MiddlewareFunc {
 	}
 }
 
+// ServerVersionMiddleware X-KNOQ-VERSIONをレスポンスヘッダーを追加するミドルウェア
+func ServerVersionMiddleware(version string) echo.MiddlewareFunc {
+	return func(next echo.HandlerFunc) echo.HandlerFunc {
+		return func(c echo.Context) error {
+			c.Response().Header().Set("X-KNOQ-VERSION", version)
+			return next(c)
+		}
+	}
+}
+
 // TraQUserMiddleware traQユーザーか判定するミドルウェア
 // TODO funcname fix
 func (h *Handlers) TraQUserMiddleware(next echo.HandlerFunc) echo.HandlerFunc {
diff --git a/router/router.go b/router/router.go
index 57f0c600..7d327c07 100644
--- a/router/router.go
+++ b/router/router.go
@@ -46,6 +46,8 @@ func (h *Handlers) SetupRoute() *echo.Echo {
 	}
 	e.Use(session.Middleware(sessions.NewCookieStore(h.SessionKey)))
 
+	e.Use(ServerVersionMiddleware(domain.VERSION))
+
 	// TODO fix "portal origin"
 	e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
 		AllowOrigins:     []string{"https://portal.trap.jp", "http://localhost:8080"},