diff --git a/README.md b/README.md
index b10d458..da75d4b 100644
--- a/README.md
+++ b/README.md
@@ -82,8 +82,7 @@ func main() {
 	treblle.Configure(treblle.Configuration{
 		APIKey:     "YOUR API KEY HERE",
 		ProjectID:  "YOUR PROJECT ID HERE",
-		KeysToMask: []string{"password", "card_number"}, // optional, mask fields you don't want sent to Treblle
-		ServerURL:  "https://rocknrolla.treblle.com",    // optional, don't use default server URL
+		AdditionalFieldsToMask: []string{"password", "card_number"}, // optional, specify additional fields to mask
 	}
 
     // rest of your program.
@@ -98,6 +97,14 @@ mux := http.NewServeMux()
 mux.Handle("/", treblle.Middleware(yourHandler))
 ```
 
+## gorilla/mux
+To setup the `treblle.Middleware` in `gorilla/mux`, use it as a global middleware:
+
+```go
+  r := mux.NewRouter()
+	r.Use(treblle.Middleware)
+```
+
 > See the [docs](https://docs.treblle.com/en/integrations/go) for this SDK to learn more.
 
 ## Available SDKs
diff --git a/go.sum b/go.sum
index b3fbc8f..98dc31d 100644
--- a/go.sum
+++ b/go.sum
@@ -4,7 +4,6 @@ github.com/go-chi/chi v1.5.4 h1:QHdzF2szwjqVV4wmByUnTcsbIg7UGaQ0tPF2t5GcAIs=
 github.com/go-chi/chi v1.5.4/go.mod h1:uaf8YgoFazUOkPBG7fxPftUylNumIev9awIWOENIuEg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=