diff --git a/env.go b/cloudflare/env.go
similarity index 94%
rename from env.go
rename to cloudflare/env.go
index 6b9344c..3d74986 100644
--- a/env.go
+++ b/cloudflare/env.go
@@ -1,4 +1,4 @@
-package workers
+package cloudflare
 
 import "github.com/syumai/workers/internal/jsutil"
 
diff --git a/examples/env/main.go b/examples/env/main.go
index c546a14..3737f6d 100644
--- a/examples/env/main.go
+++ b/examples/env/main.go
@@ -4,12 +4,14 @@ import (
 	"fmt"
 	"net/http"
 
+	"github.com/syumai/workers/cloudflare"
+
 	"github.com/syumai/workers"
 )
 
 func main() {
 	handler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
-		fmt.Fprintf(w, "MY_ENV: %s", workers.Getenv("MY_ENV"))
+		fmt.Fprintf(w, "MY_ENV: %s", cloudflare.Getenv("MY_ENV"))
 	})
 	workers.Serve(handler)
 }