diff --git a/examples/http/src/example/server.clj b/examples/http/src/example/server.clj
index d3ae7a3d..adc6a90d 100644
--- a/examples/http/src/example/server.clj
+++ b/examples/http/src/example/server.clj
@@ -3,18 +3,19 @@
             [reitit.ring :as ring]
             [reitit.interceptor.sieppari]
             [ring.adapter.jetty :as jetty]
+            [muuntaja.interceptor]
             [clojure.core.async :as a]
             [manifold.deferred :as d]
             [promesa.core :as p]))
 
 (defn interceptor [f x]
-  {:enter (fn [ctx] (f (update-in ctx [:request :via] (fnil conj []) x)))
-   :leave (fn [ctx] (f (update-in ctx [:response :body] str "\n<- " x)))})
+  {:enter (fn [ctx] (f (update-in ctx [:request :via] (fnil conj []) {:enter x})))
+   :leave (fn [ctx] (f (update-in ctx [:response :body] conj {:leave x})))})
 
 (defn handler [f]
   (fn [{:keys [via]}]
     (f {:status 200,
-        :body (str (apply str (map #(str "-> " % "\n") via)) "   hello!")})))
+        :body (conj via :handler)})))
 
 (def <sync> identity)
 (def <future> #(future %))
@@ -54,7 +55,8 @@
                :handler (handler <promesa>)}}]])
 
     (ring/create-default-handler)
-    {:executor reitit.interceptor.sieppari/executor}))
+    {:executor reitit.interceptor.sieppari/executor
+     :interceptors [(muuntaja.interceptor/format-interceptor)]}))
 
 (defn start []
   (jetty/run-jetty #'app {:port 3000, :join? false, :async? true})
diff --git a/examples/ring-swagger/src/example/server.clj b/examples/ring-swagger/src/example/server.clj
index 50f856db..19e36257 100644
--- a/examples/ring-swagger/src/example/server.clj
+++ b/examples/ring-swagger/src/example/server.clj
@@ -26,10 +26,11 @@
         ["/upload"
          {:post {:summary "upload a file"
                  :parameters {:multipart {:file multipart/temp-file-part}}
-                 :responses {200 {:body {:file multipart/temp-file-part}}}
+                 :responses {200 {:body {:name string?, :size int?}}}
                  :handler (fn [{{{:keys [file]} :multipart} :parameters}]
                             {:status 200
-                             :body {:file file}})}}]
+                             :body {:name (:filename file)
+                                    :size (:size file)}})}}]
 
         ["/download"
          {:get {:summary "downloads a file"
@@ -37,7 +38,8 @@
                 :handler (fn [_]
                            {:status 200
                             :headers {"Content-Type" "image/png"}
-                            :body (io/input-stream (io/resource "reitit.png"))})}}]]
+                            :body (io/input-stream
+                                    (io/resource "reitit.png"))})}}]]
 
        ["/math"
         {:swagger {:tags ["math"]}}