diff --git a/main.go b/main.go
index ccb0330..2082198 100644
--- a/main.go
+++ b/main.go
@@ -20,6 +20,9 @@ var (
 	quotaDir string
 	users    string
 	timeout  time.Duration
+
+	startTime      = time.Now()
+	lastReloadTime = time.Now()
 )
 
 func loadQuotaFiles(quotaDir string) error {
@@ -55,6 +58,7 @@ func updateQuota(quotaName string, browsers Browsers) {
 	defer confLock.Unlock()
 	quota[quotaName] = browsers
 	routes = appendRoutes(routes, &browsers)
+	lastReloadTime = time.Now()
 }
 
 func init() {
diff --git a/proxy.go b/proxy.go
index a45b68e..9df9869 100644
--- a/proxy.go
+++ b/proxy.go
@@ -273,11 +273,16 @@ func proxy(r *http.Request) {
 	r.URL.Path = errPath
 }
 
-func ping(w http.ResponseWriter, r *http.Request) {
-	w.Write([]byte("Ok\n"))
+func ping(w http.ResponseWriter, _ *http.Request) {
+	confLock.RLock()
+	defer confLock.RUnlock()
+	json.NewEncoder(w).Encode(struct {
+		Uptime         string `json:"uptime"`
+		LastReloadTime string `json:"lastReloadTime"`
+	}{time.Since(startTime).String(), lastReloadTime.String()})
 }
 
-func err(w http.ResponseWriter, r *http.Request) {
+func err(w http.ResponseWriter, _ *http.Request) {
 	reply(w, errMsg("route not found"), http.StatusNotFound)
 }
 
diff --git a/proxy_test.go b/proxy_test.go
index e270961..beada69 100644
--- a/proxy_test.go
+++ b/proxy_test.go
@@ -83,6 +83,17 @@ func TestPing(t *testing.T) {
 
 	AssertThat(t, err, Is{nil})
 	AssertThat(t, rsp, Code{http.StatusOK})
+	AssertThat(t, rsp.Body, Is{Not{nil}})
+
+	var data map[string]string
+	bt, readErr := ioutil.ReadAll(rsp.Body)
+	AssertThat(t, readErr, Is{nil})
+	jsonErr := json.Unmarshal(bt, &data)
+	AssertThat(t, jsonErr, Is{nil})
+	_, hasUptime := data["uptime"]
+	AssertThat(t, hasUptime, Is{true})
+	_, hasLastReloadTime := data["lastReloadTime"]
+	AssertThat(t, hasLastReloadTime, Is{true})
 }
 
 func TestErr(t *testing.T) {