diff --git a/.golangci.yaml b/.golangci.yaml
index 3455902..26a4188 100644
--- a/.golangci.yaml
+++ b/.golangci.yaml
@@ -1,13 +1,20 @@
 linters:
   disable-all: true
   enable:
-    - gofumpt
-    - staticcheck
-    - govet
     - gci
+    - gofumpt
+    - gosimple
+    - govet
+    - ineffassign
+    - misspell
+    - staticcheck
+    - unconvert
+    - unused
+    - usestdlibvars
 
 linters-settings:
   gci:
+    custom-order: true
     sections:
       - standard
       - default
diff --git a/component/simple-obfs/http.go b/component/simple-obfs/http.go
index 57cdec6..f9a2ed1 100644
--- a/component/simple-obfs/http.go
+++ b/component/simple-obfs/http.go
@@ -65,7 +65,7 @@ func (ho *HTTPObfs) Write(b []byte) (int, error) {
 	if ho.firstRequest {
 		randBytes := make([]byte, 16)
 		rand.Read(randBytes)
-		req, _ := http.NewRequest("GET", fmt.Sprintf("http://%s/", ho.host), bytes.NewBuffer(b[:]))
+		req, _ := http.NewRequest(http.MethodGet, fmt.Sprintf("http://%s/", ho.host), bytes.NewBuffer(b[:]))
 		req.Header.Set("User-Agent", fmt.Sprintf("curl/7.%d.%d", mRand.Int()%54, mRand.Int()%2))
 		req.Header.Set("Upgrade", "websocket")
 		req.Header.Set("Connection", "Upgrade")