diff --git a/.circleci/config.yml b/.circleci/config.yml
index 55be1d9..6bf42fe 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -5,7 +5,7 @@ jobs:
     docker:
       # using custom image, see .circleci/images/primary/Dockerfile
       # - image: govgo/robotgoci:1.10.3
-      - image: golang:1.19.3
+      - image: golang:1.19.4
     working_directory: /gopath/src/github.com/go-vgo/robotgo
     steps:
       - checkout
diff --git a/.circleci/images/primary/Dockerfile b/.circleci/images/primary/Dockerfile
index 7b15f84..01b48c9 100644
--- a/.circleci/images/primary/Dockerfile
+++ b/.circleci/images/primary/Dockerfile
@@ -1,5 +1,5 @@
 # FROM golang:1.10.1
-FROM golang:1.19.3-stretch AS build
+FROM golang:1.19.4-stretch AS build
 # FROM govgo/go:1.11.1
 
 RUN apt update && apt install -y --no-install-recommends \
diff --git a/appveyor.yml b/appveyor.yml
index 1e8bb1c..c667add 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -34,7 +34,7 @@ environment:
       PATH: C:\msys64\mingw32\bin\;C:\Program Files (x86)\NSIS\;%PATH%
   # - COMPILER: MINGW_W64
   #   ARCHITECTURE: x64
-  GOVERSION: 1.19.3
+  GOVERSION: 1.19.4
   # GOPATH: c:\gopath
 
 # scripts that run after cloning repository
diff --git a/clipboard/cmd/gocopy/gocopy.go b/clipboard/cmd/gocopy/gocopy.go
index 115672a..aaa9c30 100644
--- a/clipboard/cmd/gocopy/gocopy.go
+++ b/clipboard/cmd/gocopy/gocopy.go
@@ -1,14 +1,14 @@
 package main
 
 import (
-	"io/ioutil"
+	"io"
 	"os"
 
 	"github.com/go-vgo/robotgo/clipboard"
 )
 
 func main() {
-	out, err := ioutil.ReadAll(os.Stdin)
+	out, err := io.ReadAll(os.Stdin)
 	if err != nil {
 		panic(err)
 	}
diff --git a/key.go b/key.go
index f0b37a8..998452e 100644
--- a/key.go
+++ b/key.go
@@ -322,6 +322,15 @@ var keyNames = map[string]C.MMKeyCode{
 	// { NULL:              C.K_NOT_A_KEY }
 }
 
+// CmdCtrl If the operating system is macOS, return the key string "cmd",
+// otherwise return the key string "ctrl
+func CmdCtrl() string {
+	if runtime.GOOS == "darwin" {
+		return "cmd"
+	}
+	return "ctrl"
+}
+
 // It sends a key press and release to the active application
 func tapKeyCode(code C.MMKeyCode, flags C.MMKeyFlags, pid C.uintptr) {
 	C.toggleKeyCode(code, true, flags, pid)