diff --git a/plugin.go b/plugin.go
index d48db66..211d6c5 100644
--- a/plugin.go
+++ b/plugin.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"os"
 	"strconv"
 	"strings"
 	"sync"
@@ -86,6 +87,17 @@ func (p Plugin) Exec() error {
 				},
 			}
 
+			// expand DRONE env variables in script (like DRONE_DEPLOY_TO)
+			for index := range p.Config.Script {
+				parts := strings.Split(p.Config.Script[index], " ")
+				for i := range parts {
+					if strings.Contains(parts[i], "DRONE") {
+						parts[i] = os.ExpandEnv(parts[i])
+					}
+				}
+				p.Config.Script[index] = strings.Join(parts, " ")
+			}
+
 			p.log(host, "commands: ", strings.Join(p.Config.Script, "\n"))
 			stdoutChan, stderrChan, doneChan, errChan, err := ssh.Stream(strings.Join(p.Config.Script, "\n"), p.Config.CommandTimeout)
 			if err != nil {
diff --git a/plugin_test.go b/plugin_test.go
index 8fe9709..3d3653d 100644
--- a/plugin_test.go
+++ b/plugin_test.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"os"
 	"testing"
 
 	"github.com/appleboy/easyssh-proxy"
@@ -137,6 +138,23 @@ func TestStreamFromSSHCommand(t *testing.T) {
 	assert.Nil(t, err)
 }
 
+func TestDroneEnvSubstitution(t *testing.T) {
+	os.Setenv("DRONE_DEPLOY_TO", "dev")
+	plugin := Plugin{
+		Config: Config{
+			Host:           []string{"localhost", "127.0.0.1"},
+			UserName:       "drone-scp",
+			Port:           22,
+			KeyPath:        "./tests/.ssh/id_rsa",
+			Script:         []string{"echo $DRONE_DEPLOY_TO $PATH"},
+			CommandTimeout: 60,
+		},
+	}
+
+	err := plugin.Exec()
+	assert.Nil(t, err)
+}
+
 func TestSSHScriptWithError(t *testing.T) {
 	plugin := Plugin{
 		Config: Config{